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WatchtheDetails

115 models · 7 groups

Seiko watch sizes and specs

115 Seiko models have a page here, with cases from 38–45 mm, 43.6–49.3 mm lug to lug. Lug widths: 19, 20, 21, 22 mm. Each page carries its movement, battery and strap size, with a source for every number.

Sources checked · How we source numbers
Size comparison: Seiko SLA079J1, Seiko SPB259, Seiko SRPD97Top-view outlines to scale on one centre. A Seiko SLA079J1: Ø 42.6, L2L 49.3, lug 20, T 13.4. B Seiko SPB259: Ø 38, L2L 46.2, lug 19, T 12.9 (vs A: Ø −4.6 L2L −3.1 lug −1 T −0.5). C Seiko SRPD97: Ø 38.3, L2L 43.6, lug 20, T 11.2 (vs A: Ø −4.3 L2L −5.7 lug 0 T −2.2).B Ø 38C Ø 38.3A Ø 42.6C L2L 43.6B L2L 46.2A L2L 49.3A Seiko SLA079J1Ø 42.6 · L2L 49.3 · lug 20 · T 13.4B Seiko SPB259Ø 38 · L2L 46.2 · lug 19 · T 12.9vs A: Ø −4.6 L2L −3.1 lug −1 T −0.5C Seiko SRPD97Ø 38.3 · L2L 43.6 · lug 20 · T 11.2vs A: Ø −4.3 L2L −5.7 lug 0 T −2.2
Largest, middle and smallest Seiko here, to scaleDrawing from data, not a photo · mm
Several anonymous wristwatches on linen seen from above: a steel bracelet watch, an olive textile-strap field watch, a white-dial dress watch on brown leather and a small resin digital watch, all with blank dials.
Seiko models here
115
Case diameter
38–45mm
Lug to lug
43.6–49.3mm
Lug widths
19 · 20 · 21 · 22mm

5 Sports

44 models · case 39.4–42.5 mm · 44.6–48.1 mm lug to lug · 20 or 22 mm lugs · Seiko 4R34, Seiko 7S36, Seiko 4R36

Silhouettes from the published sizes, shortest first, all to one scale; the bar and each grid square are 10 mm. Not photos.

Prospex

33 models · case 38–45 mm · 45.9–48.7 mm lug to lug · 19 or 20 or 21 or 22 mm lugs · 5 movements

Presage

20 models · case 38.3–41.7 mm · 43.6–47.5 mm lug to lug · 20 mm lugs · 5 movements

Automatic models

8 models · case 38–42.6 mm · 46.5–49.3 mm lug to lug · 20 or 22 mm lugs · 4 movements

Cocktail Time

7 models · case 38.5–40.5 mm · 45.4–47.5 mm lug to lug · 20 mm lugs · Seiko 4R35

Discover More

2 models · case 40.2–42.5 mm · 46–47 mm lug to lug · 20 or 22 mm lugs · Seiko 4R36

SKX series

1 model · case 42.5 mm · 46 mm lug to lug · 22 mm lugs · Seiko 7S26

All Seiko models with sizes

Key sizes with their sources, as one table; the model page has every field.

Show the specs table · 115 models, every number with its source
  • Seiko SARB017

    Prospex · Seiko 6R15 · automatic

    Case
    38 mm1seller listing
    3 sources disagree; show every value
    • seller listing 38 mm1
    • secondary source 39.5 mm2
    • secondary source 39 mm3
    Lug to lug
    not published
    Thickness
    12 mm1seller listing
    Lug width
    20 mm1seller listing
  • Seiko SARX055

    Presage · Seiko 6R15 · automatic

    Case
    40.8 mm4measured
    2 sources disagree; show every value
    • measured 40.8 mm4
    • secondary source 41 mm5
    Lug to lug
    46.2 mm4measured
    Thickness
    11 mm4measured
    Lug width
    not published
  • Seiko SBDC091

    Automatic models · Seiko 6R35 · automatic

    Case
    39.5 mm6seller listing
    Lug to lug
    46.5 mm6seller listing
    Thickness
    13 mm6seller listing
    Lug width
    20 mm6seller listing
  • Seiko SBSC003

    5 Sports · Seiko 4R34 · automatic

    Case
    42.5 mm7
    Lug to lug
    not published
    Thickness
    13.6 mm7
    Lug width
    not published
  • Seiko SKX007

    SKX series · Seiko 7S26 · automatic

    Case
    42.5 mm8measured
    2 sources disagree; show every value
    • measured 42.5 mm8
    • measured 42 mm9
    Lug to lug
    46 mm8measured
    Thickness
    13.25 mm8measured
    2 sources disagree; show every value
    • measured 13.25 mm8
    • measured 13 mm9
    Lug width
    22 mm8measured
  • Seiko SKX009

    Automatic models · Seiko 7S26 · automatic

    Case
    41 mm12seller listing
    3 sources disagree; show every value
    • seller listing 41 mm12
    • secondary source 42 mm13
    • secondary source 42.5 mm14
    Lug to lug
    not published
    Thickness
    13 mm12seller listing
    Lug width
    22 mm12seller listing
  • Seiko SKX013

    Automatic models · Seiko 7S26 · automatic

    Case
    38 mm15seller listing
    2 sources disagree; show every value
    • seller listing 38 mm15
    • secondary source 37 mm16
    Lug to lug
    not published
    Thickness
    13 mm15seller listing
    Lug width
    20 mm16secondary source
  • Seiko SLA017

    Prospex · Seiko 8L35 · automatic

    Case
    40 mm17seller listing
    2 sources disagree; show every value
    • seller listing 40 mm17
    • secondary source 39.9 mm18
    Lug to lug
    not published
    Thickness
    14 mm17seller listing
    Lug width
    19 mm17seller listing
  • Seiko Marinemaster 1968 Heritage Diver's Watch

    Automatic models · Seiko 8L35 · automatic

    Case
    42.6 mm19
    Lug to lug
    49.3 mm19
    Thickness
    13.4 mm19
    Lug width
    20 mm19
  • Seiko Marinemaster 1968 Heritage Diver's Watch

    Automatic models · Seiko 8L35 · automatic

    Case
    42.6 mm20
    Lug to lug
    49.3 mm20
    Thickness
    13.4 mm20
    Lug width
    20 mm20
  • Seiko SNZF17

    5 Sports · Seiko 7S36 · automatic

    Case
    40.7 mm21
    Lug to lug
    not published
    Thickness
    12.5 mm21
    Lug width
    22 mm21
  • Seiko SNZG13

    5 Sports · Seiko 7S36 · automatic

    Case
    41.9 mm22
    Lug to lug
    not published
    Thickness
    6.8 mm22
    Lug width
    22 mm22
  • Seiko SPB117

    Automatic models · Seiko 6R35 · automatic

    Case
    39.5 mm23seller listing
    Lug to lug
    46.5 mm23seller listing
    Thickness
    13 mm23seller listing
    Lug width
    not published
  • Seiko SPB119

    Prospex · Seiko 6R35 · automatic

    Case
    39.5 mm24seller listing
    Lug to lug
    46.5 mm24seller listing
    Thickness
    13 mm24seller listing
    Lug width
    not published
  • Seiko SPB121

    Automatic models · Seiko 6R35 · automatic

    Case
    39.5 mm25seller listing
    Lug to lug
    46.5 mm25seller listing
    Thickness
    13 mm25seller listing
    Lug width
    20 mm6seller listing
  • Seiko SPB123

    Prospex · Seiko 6R35 · automatic

    Case
    39.5 mm26seller listing
    Lug to lug
    46.5 mm26seller listing
    Thickness
    13 mm26seller listing
    Lug width
    not published
  • Seiko SPB155

    Prospex · Seiko 6R35 · automatic

    Case
    38 mm27
    Lug to lug
    46 mm27
    Thickness
    12.9 mm27
    Lug width
    20 mm27
  • Seiko SPB157

    Prospex · Seiko 6R35 · automatic

    Case
    38 mm28
    Lug to lug
    46 mm28
    Thickness
    12.9 mm28
    Lug width
    20 mm28
  • Seiko SPB159

    Prospex · Seiko 6R35 · automatic

    Case
    38 mm29
    Lug to lug
    46 mm29
    Thickness
    12.9 mm29
    Lug width
    20 mm29
  • Seiko SPB165

    Presage · Seiko 6R35 · automatic

    Case
    39.3 mm30
    Lug to lug
    47.2 mm30
    Thickness
    11.1 mm30
    Lug width
    20 mm30
  • Seiko SPB167

    Presage · Seiko 6R35 · automatic

    Case
    39.5 mm31seller listing
    Lug to lug
    47 mm31seller listing
    Thickness
    11 mm31seller listing
    Lug width
    not published
  • Seiko SPB169

    Presage · Seiko 6R35 · automatic

    Case
    39.3 mm32
    Lug to lug
    47.2 mm32
    Thickness
    11.1 mm32
    Lug width
    20 mm32
  • Seiko SPB199

    Prospex · Seiko 6R35 · automatic

    Case
    not published
    Lug to lug
    not published
    Thickness
    not published
    Lug width
    not published
  • Seiko SPB209

    Prospex · Seiko 6R35 · automatic

    Case
    39.5 mm33
    Lug to lug
    46.4 mm33
    Thickness
    13.2 mm33
    Lug width
    20 mm33
  • Seiko SPB241

    Prospex · Seiko 6R35 · automatic

    Case
    38 mm34
    Lug to lug
    46.2 mm34
    Thickness
    12.9 mm34
    Lug width
    19 mm34
  • Seiko SPB243

    Prospex · Seiko 6R35 · automatic

    Case
    38 mm35seller listing
    Lug to lug
    46 mm35seller listing
    Thickness
    13 mm35seller listing
    Lug width
    not published
  • Seiko SPB245

    Prospex · Seiko 6R35 · automatic

    Case
    38 mm36
    Lug to lug
    46.2 mm36
    Thickness
    12.9 mm36
    Lug width
    19 mm36
  • Seiko SPB249

    Prospex · Seiko 6R35 · automatic

    Case
    38 mm37
    Lug to lug
    46.2 mm37
    Thickness
    12.9 mm37
    Lug width
    19 mm37
  • Seiko SPB259

    Prospex · Seiko 6R35 · automatic

    Case
    38 mm38
    Lug to lug
    46.2 mm38
    Thickness
    12.9 mm38
    Lug width
    19 mm38
  • Seiko SRP775

    Prospex · Seiko 4R36 · automatic

    Case
    45 mm39
    Lug to lug
    not published
    Thickness
    13.4 mm39
    Lug width
    22 mm39
  • Seiko SRP777 Turtle

    Prospex · Seiko 4R36 · automatic

    Case
    45 mm11measured
    2 sources disagree; show every value
    • measured 45 mm11
    • measured 44.3 mm40
    Lug to lug
    48 mm11measured
    2 sources disagree; show every value
    • measured 48 mm11
    • measured 47.25 mm40
    Thickness
    14 mm11measured
    2 sources disagree; show every value
    • measured 14 mm11
    • measured slightly over 13mm mm11
    Lug width
    22 mm11measured
  • Seiko SRPA21

    Prospex · Seiko 4R36 · automatic

    Case
    45 mm41
    Lug to lug
    not published
    Thickness
    13.4 mm41
    Lug width
    22 mm41
  • Seiko SRPB41

    Presage · Seiko 4R35 · automatic

    Case
    40.5 mm42
    Lug to lug
    not published
    Thickness
    11.8 mm42
    Lug width
    20 mm42
  • Seiko SRPB43

    Presage · Seiko 4R35 · automatic

    Case
    40.5 mm43
    Lug to lug
    not published
    Thickness
    11.8 mm43
    Lug width
    20 mm43
  • Seiko SRPB46

    Cocktail Time · Seiko 4R35 · automatic

    Case
    40.5 mm44
    Lug to lug
    not published
    Thickness
    11.8 mm44
    Lug width
    20 mm44
  • Seiko SRPB49

    Prospex · Seiko 4R35 · automatic

    Case
    44 mm45seller listing
    Lug to lug
    not published
    Thickness
    13 mm45seller listing
    Lug width
    20 mm45seller listing
  • Seiko SRPB51

    Prospex · Seiko 4R35 · automatic

    Case
    43.8 mm46
    Lug to lug
    not published
    Thickness
    13.4 mm46
    Lug width
    22 mm46
  • Seiko SRPB77

    Cocktail Time · Seiko 4R35 · automatic

    Case
    40.5 mm47seller listing
    Lug to lug
    not published
    Thickness
    12 mm47seller listing
    Lug width
    20 mm47seller listing
  • Seiko SRPD21

    Prospex · Seiko 4R36 · automatic

    Case
    45 mm48
    Lug to lug
    47.7 mm48
    Thickness
    13 mm48
    Lug width
    22 mm48
  • Seiko SRPD23

    Prospex · Seiko 4R35 · automatic

    Case
    43.8 mm49
    Lug to lug
    48.4 mm49
    Thickness
    13.4 mm49
    Lug width
    22 mm49
  • Seiko SRPD37

    Cocktail Time · Seiko 4R35 · automatic

    Case
    40.5 mm50
    Lug to lug
    47.5 mm50
    Thickness
    11.8 mm50
    Lug width
    20 mm50
  • Seiko SRPD51

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm51
    Lug to lug
    46 mm51
    Thickness
    13.4 mm51
    Lug width
    22 mm51
  • Seiko SRPD53

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm52
    Lug to lug
    46 mm52
    Thickness
    13.4 mm52
    Lug width
    22 mm52
  • Seiko SRPD55

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm53
    2 sources disagree; show every value
    • manufacturer 42.5 mm53
    • measured 41 mm56
    Lug to lug
    46 mm53
    Thickness
    13.4 mm53
    2 sources disagree; show every value
    • manufacturer 13.4 mm53
    • measured 13 mm56
    Lug width
    22 mm53
  • Seiko SRPD57

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm57
    Lug to lug
    46 mm57
    Thickness
    13.4 mm57
    Lug width
    22 mm57
  • Seiko SRPD59

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm58
    Lug to lug
    46 mm58
    Thickness
    13.4 mm58
    Lug width
    22 mm58
  • Seiko SRPD61

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm59
    Lug to lug
    46 mm59
    Thickness
    13.4 mm59
    Lug width
    22 mm59
  • Seiko SRPD63

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm60
    Lug to lug
    46 mm60
    Thickness
    13.4 mm60
    Lug width
    22 mm60
  • Seiko SRPD65

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm61
    Lug to lug
    46 mm61
    Thickness
    13.4 mm61
    Lug width
    22 mm61
  • Seiko SRPD71

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm62
    Lug to lug
    46 mm62
    Thickness
    13.4 mm62
    Lug width
    22 mm62
  • Seiko SRPD73

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm63
    Lug to lug
    46 mm63
    Thickness
    13.4 mm63
    Lug width
    22 mm63
  • Seiko SRPD76

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm64
    Lug to lug
    46 mm64
    Thickness
    13.4 mm64
    Lug width
    22 mm64
  • Seiko SRPD77

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm65
    Lug to lug
    46 mm65
    Thickness
    13.4 mm65
    Lug width
    22 mm65
  • Seiko SRPD79

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm66
    Lug to lug
    46 mm66
    Thickness
    13.4 mm66
    Lug width
    22 mm66
  • Seiko SRPD93

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm67
    Lug to lug
    46 mm67
    Thickness
    13.4 mm67
    Lug width
    22 mm67
  • Seiko SRPD95

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm68
    Lug to lug
    46 mm68
    Thickness
    13.4 mm68
    Lug width
    22 mm68
  • Seiko SRPD97

    Presage · Seiko 4R35 · automatic

    Case
    38.3 mm69
    Lug to lug
    43.6 mm69
    Thickness
    11.2 mm69
    Lug width
    20 mm69
  • Seiko SRPE03

    Prospex · Seiko 4R36 · automatic

    Case
    45 mm70
    Lug to lug
    47.7 mm70
    Thickness
    13.2 mm70
    Lug width
    22 mm70
  • Seiko SRPE05

    Prospex · Seiko 4R36 · automatic

    Case
    45 mm71
    Lug to lug
    47.7 mm71
    Thickness
    13.2 mm71
    Lug width
    22 mm71
  • Seiko SRPE15

    Cocktail Time · Seiko 4R35 · automatic

    Case
    40.5 mm72
    Lug to lug
    47.5 mm72
    Thickness
    11.8 mm72
    Lug width
    20 mm72
  • Seiko SRPE17

    Automatic models · Seiko 4R35 · automatic

    Case
    40.5 mm73seller listing
    Lug to lug
    not published
    Thickness
    12 mm73seller listing
    Lug width
    20 mm73seller listing
  • Seiko SRPE19

    Cocktail Time · Seiko 4R35 · automatic

    Case
    40.5 mm74
    Lug to lug
    47.5 mm74
    Thickness
    11.8 mm74
    Lug width
    20 mm74
  • Seiko SRPE33

    Prospex · Seiko 4R35 · automatic

    Case
    43.8 mm75
    Lug to lug
    48.7 mm75
    Thickness
    12.8 mm75
    Lug width
    22 mm75
  • Seiko SRPE35

    Prospex · Seiko 4R35 · automatic

    Case
    not published
    Lug to lug
    not published
    Thickness
    not published
    Lug width
    22 mm76seller listing
  • Seiko SRPE37

    Prospex · Seiko 4R35 · automatic

    Case
    43.8 mm77
    Lug to lug
    48.7 mm77
    Thickness
    12.8 mm77
    Lug width
    22 mm77
  • Seiko SRPE39

    Prospex · Seiko 4R36 · automatic

    Case
    45 mm78seller listing
    Lug to lug
    not published
    Thickness
    not published
    Lug width
    not published
  • Seiko SRPE41

    Cocktail Time · Seiko 4R35 · automatic

    Case
    38.5 mm79
    Lug to lug
    45.4 mm79
    Thickness
    11.8 mm79
    Lug width
    20 mm79
  • Seiko SRPE43

    Cocktail Time · Seiko 4R35 · automatic

    Case
    38.5 mm80
    Lug to lug
    45.4 mm80
    Thickness
    11.8 mm80
    Lug width
    20 mm80
  • Seiko SRPE45

    Presage · Seiko 4R35 · automatic

    Case
    38.5 mm81
    Lug to lug
    45.4 mm81
    Thickness
    11.8 mm81
    Lug width
    20 mm81
  • Seiko SRPE51

    5 Sports · Seiko 4R36 · automatic

    Case
    40 mm82
    Lug to lug
    44.6 mm82
    Thickness
    11.5 mm82
    Lug width
    20 mm82
  • Seiko SRPE53

    5 Sports · Seiko 4R36 · automatic

    Case
    40 mm83
    Lug to lug
    44.6 mm83
    Thickness
    11.5 mm83
    Lug width
    20 mm83
  • Seiko SRPE55

    5 Sports · Seiko 4R36 · automatic

    Case
    40 mm84
    Lug to lug
    44.6 mm84
    Thickness
    11.5 mm84
    Lug width
    20 mm84
  • Seiko SRPE57

    5 Sports · Seiko 4R36 · automatic

    Case
    40 mm85
    Lug to lug
    44.6 mm85
    Thickness
    11.5 mm85
    Lug width
    20 mm85
  • Seiko SRPE61

    5 Sports · Seiko 4R36 · automatic

    Case
    40 mm86
    Lug to lug
    44.6 mm86
    Thickness
    11.5 mm86
    Lug width
    20 mm86
  • Seiko SRPE65

    5 Sports · Seiko 4R36 · automatic

    Case
    40 mm87
    Lug to lug
    44.6 mm87
    Thickness
    11.5 mm87
    Lug width
    20 mm87
  • Seiko SRPE67

    5 Sports · Seiko 4R36 · automatic

    Case
    40 mm88
    Lug to lug
    44.6 mm88
    Thickness
    11.5 mm88
    Lug width
    20 mm88
  • Seiko SRPE69

    5 Sports · Seiko 4R36 · automatic

    Case
    40 mm89
    Lug to lug
    44.6 mm89
    Thickness
    11.5 mm89
    Lug width
    20 mm89
  • Seiko SRPE74

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm90
    Lug to lug
    46 mm90
    Thickness
    13.4 mm90
    Lug width
    22 mm90
  • Seiko SRPE93

    Prospex · Seiko 4R36 · automatic

    Case
    45 mm91
    Lug to lug
    not published
    Thickness
    13.4 mm91
    Lug width
    22 mm91
  • Seiko SRPF03

    Prospex · Seiko 4R35 · automatic

    Case
    43.8 mm92
    Lug to lug
    not published
    Thickness
    13.4 mm92
    Lug width
    22 mm92
  • Seiko SRPF41

    Presage · Seiko 4R35 · automatic

    Case
    38.5 mm93
    Lug to lug
    45.4 mm93
    Thickness
    11.8 mm93
    Lug width
    20 mm93
  • Seiko SRPF53

    Presage · Seiko 4R35 · automatic

    Case
    41.7 mm94seller listing
    Lug to lug
    not published
    Thickness
    12 mm94seller listing
    Lug width
    20 mm94seller listing
  • Seiko SRPF77

    Prospex · Seiko 4R36 · automatic

    Case
    45 mm95
    Lug to lug
    47.7 mm95
    Thickness
    13.2 mm95
    Lug width
    22 mm95
  • Seiko SRPF79

    Prospex · Seiko 4R35 · automatic

    Case
    43.8 mm96
    Lug to lug
    48.7 mm96
    Thickness
    12.8 mm96
    Lug width
    22 mm96
  • Seiko SRPG03

    Presage · Seiko 4R35 · automatic

    Case
    40.8 mm97
    Lug to lug
    47 mm97
    Thickness
    12 mm97
    Lug width
    20 mm97
  • Seiko SRPG05

    Presage · Seiko 4R35 · automatic

    Case
    41 mm98seller listing
    Lug to lug
    47 mm98seller listing
    Thickness
    12 mm98seller listing
    Lug width
    not published
  • Seiko SRPG07

    Presage · Seiko 4R35 · automatic

    Case
    40.8 mm99
    Lug to lug
    47 mm99
    Thickness
    12 mm99
    Lug width
    20 mm99
  • Seiko SRPG09

    Presage · Seiko 4R35 · automatic

    Case
    40.8 mm100
    Lug to lug
    47 mm100
    Thickness
    12 mm100
    Lug width
    20 mm100
  • Seiko SRPG19

    Prospex · Seiko 4R36 · automatic

    Case
    45 mm101
    Lug to lug
    47.7 mm101
    Thickness
    13.2 mm101
    Lug width
    22 mm101
  • Seiko SRPG27

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm102
    Lug to lug
    48.1 mm102
    Thickness
    13.2 mm102
    Lug width
    20 mm102
  • Seiko SRPG29

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm103
    Lug to lug
    48.1 mm103
    Thickness
    13.2 mm103
    Lug width
    20 mm103
  • Seiko SRPG31

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm104
    Lug to lug
    48.1 mm104
    Thickness
    13.2 mm104
    Lug width
    20 mm104
  • Seiko SRPG33

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm105
    Lug to lug
    48.1 mm105
    Thickness
    13.2 mm105
    Lug width
    20 mm105
  • Seiko SRPG35

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm106
    Lug to lug
    48.1 mm106
    Thickness
    13.2 mm106
    Lug width
    20 mm106
  • Seiko SRPG37

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm107
    Lug to lug
    48.1 mm107
    Thickness
    13.2 mm107
    Lug width
    20 mm107
  • Seiko SRPG39

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm108
    Lug to lug
    48.1 mm108
    Thickness
    13.2 mm108
    Lug width
    20 mm108
  • Seiko SRPG41

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm109
    Lug to lug
    48.1 mm109
    Thickness
    13.2 mm109
    Lug width
    20 mm109
  • Seiko SRPG47

    Discover More · Seiko 4R36 · automatic

    Case
    42.5 mm110
    Lug to lug
    46 mm110
    Thickness
    13.4 mm110
    Lug width
    22 mm110
  • Seiko SRPH29

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm111
    Lug to lug
    48.1 mm111
    Thickness
    13.2 mm111
    Lug width
    20 mm111
  • Seiko SRPH31

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm112
    Lug to lug
    48.1 mm112
    Thickness
    13.2 mm112
    Lug width
    20 mm112
  • Seiko SRPH33

    5 Sports · Seiko 4R36 · automatic

    Case
    39.4 mm113
    Lug to lug
    48.1 mm113
    Thickness
    13.2 mm113
    Lug width
    20 mm113
  • Seiko SRPJ45

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm114
    Lug to lug
    46 mm114
    Thickness
    13.4 mm114
    Lug width
    22 mm114
  • Seiko SRPJ47

    5 Sports · Seiko 4R36 · automatic

    Case
    42.5 mm115
    Lug to lug
    46 mm115
    Thickness
    13.4 mm115
    Lug width
    22 mm115
  • Seiko SSA343

    Presage · Seiko 4R57 · automatic

    Case
    40.5 mm116
    Lug to lug
    not published
    Thickness
    14.4 mm116
    Lug width
    20 mm116
  • Seiko SSA345

    Presage · Seiko 4R57 · automatic

    Case
    40 mm117seller listing
    Lug to lug
    not published
    Thickness
    12 mm117seller listing
    Lug width
    20 mm117seller listing
  • Seiko SSA347

    Presage · Seiko 4R57 · automatic

    Case
    40.5 mm118
    Lug to lug
    not published
    Thickness
    14.4 mm118
    Lug width
    20 mm118
  • Seiko SSA405

    Presage · Seiko 4R38 · automatic

    Case
    40.5 mm119
    Lug to lug
    47.5 mm119
    Thickness
    11.8 mm119
    Lug width
    20 mm119
  • Seiko SSA425

    Presage · movement not published

    Case
    40.8 mm120
    Lug to lug
    47 mm120
    Thickness
    12.8 mm120
    Lug width
    20 mm120
  • Seiko SSA457

    Presage · movement not published

    Case
    40.5 mm121
    Lug to lug
    47.5 mm121
    Thickness
    11.6 mm121
    Lug width
    20 mm121
  • Seiko SSC957

    Prospex · movement not published

    Case
    41.4 mm122
    Lug to lug
    45.9 mm122
    Thickness
    13 mm122
    Lug width
    21 mm122
  • Seiko SSK001

    5 Sports · Seiko 4R34 · automatic

    Case
    42.5 mm123
    Lug to lug
    46 mm123
    Thickness
    13.6 mm123
    Lug width
    22 mm123
  • Seiko SSK003

    5 Sports · Seiko 4R34 · automatic

    Case
    42.5 mm124
    Lug to lug
    46 mm124
    Thickness
    13.6 mm124
    Lug width
    22 mm124
  • Seiko SSK005

    5 Sports · Seiko 4R34 · automatic

    Case
    42.5 mm125
    Lug to lug
    46 mm125
    Thickness
    13.6 mm125
    Lug width
    22 mm125
  • Seiko SSK059

    5 Sports · Seiko 4R34 · automatic

    Case
    39.4 mm126
    Lug to lug
    47.9 mm126
    Thickness
    13.6 mm126
    Lug width
    20 mm126
  • Seiko SUR373

    Discover More · movement not published

    Case
    40.2 mm127
    Lug to lug
    47 mm127
    Thickness
    8.4 mm127
    Lug width
    20 mm127

Movements in Seiko watches

Calibre faces and heights from the makers' figures, to one scale; the bar and each grid square are 10 mm. Not photos.

  • automatic

    Seiko 4R36

    Diameter
    27.4mm
    Height
    5.32mm
    Beat rate
    21,600bph
    Reserve
    41h

    48 models here

  • automatic

    Seiko 4R35

    Diameter
    27.4mm
    Height
    5.32mm
    Beat rate
    21,600bph
    Reserve
    41h

    26 models here

  • automatic

    Seiko 6R35

    Diameter
    27.4mm
    Height
    5.25mm
    Beat rate
    21,600bph
    Reserve
    70h

    18 models here

  • automatic

    Seiko 4R34

    Diameter
    27.4mm
    Height
    —
    Beat rate
    21,600bph
    Reserve
    41h

    5 models here

  • automatic

    Seiko 7S26

    Diameter
    27.4mm
    Height
    4.9mm
    Beat rate
    21,600bph
    Reserve
    41h

    3 models here

  • 8L35

    automatic

    Seiko 8L35

    Diameter
    —
    Height
    —
    Beat rate
    28,800bph
    Reserve
    50h

    3 models here

  • 4R57

    automatic

    Seiko 4R57

    Diameter
    —
    Height
    —
    Beat rate
    21,600bph
    Reserve
    41h

    3 models here

  • automatic

    Seiko 6R15

    Diameter
    27.4mm
    Height
    5.32mm
    Beat rate
    21,600bph
    Reserve
    50h

    2 models here

More Seiko movements

Seiko lug widths

Seiko size questions

What strap size do Seiko 5 Sports watches take?

22 mm on SNZF17, SNZG13, SRPD51, SRPD53, SRPD55, SRPD57, SRPD59, SRPD61, SRPD63, SRPD65, SRPD71, SRPD73, SRPD76, SRPD77, SRPD79, SRPD93, SRPD95, SRPE74, SRPJ45, SRPJ47, SSK001, SSK003, SSK005; 20 mm on SRPE51, SRPE53, SRPE55, SRPE57, SRPE61, SRPE65, SRPE67, SRPE69, SRPG27, SRPG29, SRPG31, SRPG33, SRPG35, SRPG37, SRPG39, SRPG41, SRPH29, SRPH31, SRPH33, SSK059. Check the reference on the case back before you order.

What strap size do Seiko Prospex watches take?

22 mm on SRP775, SRP777, SRPA21, SRPB51, SRPD21, SRPD23, SRPE03, SRPE05, SRPE33, SRPE35, SRPE37, SRPE93, SRPF03, SRPF77, SRPF79, SRPG19; 20 mm on SARB017, SPB155, SPB157, SPB159, SPB209, SRPB49; 19 mm on SLA017, SPB241, SPB245, SPB249, SPB259; 21 mm on SSC957. Check the reference on the case back before you order.

What strap size do Seiko Presage watches take?

20 mm on SPB165, SPB169, SRPB41, SRPB43, SRPD97, SRPE45, SRPF41, SRPF53, SRPG03, SRPG07, SRPG09, SSA343, SSA345, SSA347, SSA405, SSA425, SSA457.

What strap size do Seiko Cocktail Time watches take?

20 mm on all 7 we list.

Which Seiko watch here is the thinnest?

The Seiko SNZG13 at 6.8 mm, then the Seiko SUR373 at 8.4 mm; the thickest is the Seiko SSA347 at 14.4 mm.

Sources

Documents checked · Report a wrong number

  1. 1Jamtangan — Seiko Alpinist SARB017 Automatic 6R15 (JDM) product page · html · read
  2. 2WatchBase — Seiko SARB017, Mechanical Alpinist Stainless Steel / Green / Strap (WatchBase) · html · read
  3. 3StrapsCo — Seiko Prospex Alpinist SARB017 Lug Width & Strap Size · html · read
  4. 4Worn & Wound — Seiko Presage SARX055 (aka Baby Snowflake) - Worn & Wound · html · read
  5. 5Worn & Wound — Introducing the Seiko Presage Baby GS Snowflake ref. SARX055 - Worn & Wound · html · read
  6. 6Right Time International — SBDC091 pre-owned listing, Right Time (Denver), dealer spec block · html · read
  7. 7Seiko Watch Corporation — SBSC003 product page (5 Sports), seikowatches.com jp-ja · html · read
  8. 8Worn & Wound — Seiko SKX007 Review - Worn & Wound · html · read
  9. 9Worn & Wound — Seiko SKX007 (Worn & Wound article, older version) · html · read
  10. 10StrapsCo — Seiko Lug Widths & Strap Sizes (reference table) · html · read
  11. 11WatchClicker — Seiko Turtle SRP777 Review - compared to SKX007 · html · read
  12. 12Watcharama — Seiko SKX009K2 Automatic Diver (product page) · html · read
  13. 13WatchBase — Seiko SKX009K2 : Seiko SKX009 Black / Stainless Steel (WatchBase) · html · read
  14. 14StrapsCo — Seiko SKX009 Lug Width & Strap Size · html · read
  15. 15Watchoutz — Seiko 5 Sports Automatic 200M Diver Black-Dial SKX013K1 (product page) · html · read
  16. 16StrapsCo — Seiko SKX013 Lug Width & Strap Size · html · read
  17. 17Right Time International — SLA017 listing, Right Time (Denver), dealer spec block · html · read
  18. 18WatchBase — SLA017J1 Prospex Diver, WatchBase database entry · html · read
  19. 19Seiko Watch Corporation — SLA077J1 | Seiko Watch Corporation · html · read
  20. 20Seiko Watch Corporation — SLA079J1 | Seiko Watch Corporation · html · read
  21. 21Seiko Watch Corporation — SNZF17 product page (5 Sports), seikowatches.com nl-nl · html · read
  22. 22Seiko Watch Corporation — SNZG13 product page (5 Sports), seikowatches.com nl-nl · html · read
  23. 23Right Time International — SPB117 listing, Right Time (Denver), dealer spec block · html · read
  24. 24Right Time International — SPB119 listing, Right Time (Denver), dealer spec block (listing, sold out) · html · read
  25. 25Right Time International — SPB121 listing, Right Time (Denver), dealer spec block · html · read
  26. 26Right Time International — SPB123 listing, Right Time (Denver), dealer spec block (listing, sold out) · html · read
  27. 27Seiko Watch Corporation — SPB155 product page (us-en), seikowatches.com · html · read
  28. 28Seiko Watch Corporation — SPB157J1 product page (Prospex), seikowatches.com global-en · html · read
  29. 29Seiko Watch Corporation — SPB159J1 product page (Prospex), seikowatches.com global-en (US page 404) · html · read
  30. 30Seiko Watch Corporation — SPB165J1 product page (Presage), seikowatches.com global-en · html · read
  31. 31Right Time International — SPB167 listing, Right Time (Denver) - authorised dealer, retailer spec block (sold out) · html · read
  32. 32Seiko Watch Corporation — SPB169 product page (Presage), seikowatches.com global-en · html · read
  33. 33Seiko Watch Corporation — SPB209 product page (Prospex), seikowatches.com global-en · html · read
  34. 34Seiko Watch Corporation — SPB241J1 product page (Prospex), seikowatches.com global-en · html · read
  35. 35Right Time International — SPB243 listing, Right Time (Denver), dealer spec block (listing, sold out) · html · read
  36. 36Seiko Watch Corporation — SPB245J1 product page (Prospex), seikowatches.com global-en · html · read
  37. 37Seiko Watch Corporation — SPB249J1 product page (Prospex), seikowatches.com US · html · read
  38. 38Seiko Watch Corporation — SPB259J1 product page (Prospex), seikowatches.com global-en · html · read
  39. 39Seiko Watch Corporation — SRP775 product page (Prospex), seikowatches.com ph-en · html · read
  40. 40Exquisite Timepieces — Seiko SRP777 vs SRPE93: Which is the Superior Turtle? · html · read
  41. 41Seiko Watch Corporation — SRPA21 product page (Prospex), seikowatches.com ph-en · html · read
  42. 42Seiko Watch Corporation — SRPB41 product page (us-en), seikowatches.com · html · read
  43. 43Seiko Watch Corporation — SRPB43 product page (us-en), seikowatches.com · html · read
  44. 44Seiko Watch Corporation — SRPB46J1 product page (Presage), seikowatches.com US · html · read
  45. 45Right Time International — SRPB49 listing, Right Time (Denver), dealer spec block (pre-owned listing, sold out 2/2021) · html · read
  46. 46Seiko Watch Corporation — SRPB51 product page (Prospex), seikowatches.com ph-en · html · read
  47. 47Right Time International — SRPB77 listing, Right Time (Denver) - authorised dealer, retailer spec block · html · read
  48. 48Seiko Watch Corporation — SRPD21 product page (Prospex), seikowatches.com global-en · html · read
  49. 49Seiko Watch Corporation — SRPD23 product page (Prospex), seikowatches.com global-en · html · read
  50. 50Seiko Watch Corporation — SRPD37J1 product page (Presage), seikowatches.com US · html · read
  51. 51Seiko Watch Corporation — SRPD51 product page (us-en), seikowatches.com · html · read
  52. 52Seiko Watch Corporation — SRPD53 product page (us-en), seikowatches.com · html · read
  53. 53Seiko Watch Corporation — SRPD55 product page (5 Sports), seikowatches.com US · html · read
  54. 54Atelier de Griff — Hands-on: the Seiko 5 Sports SRPD video post (2020-12-24) · html · read
  55. 55Wrist Review — Introducing The Seiko 5 Sports Watch Collection For 2019 (dated August 10, 2019) · html · read
  56. 56The Tested Hub — Seiko 5 Sports SRPD55 review · html · read
  57. 57Seiko Watch Corporation — SRPD57 product page (5 Sports), seikowatches.com global-en (US page 404) · html · read
  58. 58Seiko Watch Corporation — SRPD59 product page (5 Sports), seikowatches.com US · html · read
  59. 59Seiko Watch Corporation — SRPD61 product page, seikowatches.com regional site (se-en) · html · read
  60. 60Seiko Watch Corporation — SRPD63 product page (us-en), seikowatches.com · html · read
  61. 61Seiko Watch Corporation — SRPD65 product page (us-en), seikowatches.com · html · read
  62. 62Seiko Watch Corporation — SRPD71 product page (5 Sports), seikowatches.com global-en (US page 404) · html · read
  63. 63Seiko Watch Corporation — SRPD73K2 product page (5 Sports), seikowatches.com global-en (US page 404) · html · read
  64. 64Seiko Watch Corporation — SRPD76 product page (5 Sports), seikowatches.com global-en (US page 404) · html · read
  65. 65Seiko Watch Corporation — SRPD77 product page (5 Sports), seikowatches.com global-en · html · read
  66. 66Seiko Watch Corporation — SRPD79 product page (us-en), seikowatches.com · html · read
  67. 67Seiko Watch Corporation — SRPD93P9 product page (5 Sports), seikowatches.com us-en · html · read
  68. 68Seiko Watch Corporation — SRPD95P9 product page (5 Sports), seikowatches.com us-en · html · read
  69. 69Seiko Watch Corporation — SRPD97J1 product page (Presage), seikowatches.com global-en · html · read
  70. 70Seiko Watch Corporation — SRPE03 product page (Prospex), seikowatches.com global-en (US page 404) · html · read
  71. 71Seiko Watch Corporation — SRPE05 product page (Prospex), seikowatches.com US · html · read
  72. 72Seiko Watch Corporation — SRPE15J1 product page (Presage), seikowatches.com US · html · read
  73. 73Right Time International — SRPE17 listing, Right Time (Denver), dealer spec block · html · read
  74. 74Seiko Watch Corporation — SRPE19J1 product page (Presage), seikowatches.com global-en (US page 404) · html · read
  75. 75Seiko Watch Corporation — SRPE33 product page (Prospex), seikowatches.com us-en · html · read
  76. 76Right Time International — SRPE35 listing, Right Time (Denver), dealer spec block (listing, sold out) · html · read
  77. 77Seiko Watch Corporation — SRPE37 product page (Prospex), seikowatches.com US · html · read
  78. 78Right Time International — SRPE39 listing, Right Time (Denver), dealer spec block (listing, sold out) · html · read
  79. 79Seiko Watch Corporation — SRPE41J1 product page (Presage), seikowatches.com US · html · read
  80. 80Seiko Watch Corporation — SRPE43J1 product page (Presage), seikowatches.com US · html · read
  81. 81Seiko Watch Corporation — SRPE45 product page (us-en), seikowatches.com · html · read
  82. 82Seiko Watch Corporation — SRPE51 product page, seikowatches.com regional site (middleeast-en) · html · read
  83. 83Seiko Watch Corporation — SRPE53 product page, seikowatches.com regional site (se-en) · html · read
  84. 84Seiko Watch Corporation — SRPE55 product page, seikowatches.com regional site (fr-fr) · html · read
  85. 85Seiko Watch Corporation — SRPE57 product page (us-en), seikowatches.com · html · read
  86. 86Seiko Watch Corporation — SRPE61 product page (5 Sports), seikowatches.com global-en · html · read
  87. 87Seiko Watch Corporation — SRPE65 product page (5 Sports), seikowatches.com global-en · html · read
  88. 88Seiko Watch Corporation — SRPE67 product page (5 Sports), seikowatches.com global-en · html · read
  89. 89Seiko Watch Corporation — SRPE69 product page (5 Sports), seikowatches.com global-en · html · read
  90. 90Seiko Watch Corporation — SRPE74 product page (5 Sports), seikowatches.com global-en · html · read
  91. 91Seiko Watch Corporation — SRPE93 product page (us-en), seikowatches.com · html · read
  92. 92Seiko Watch Corporation — SRPF03 product page (Prospex), seikowatches.com us-en · html · read
  93. 93Seiko Watch Corporation — SRPF41 product page (Presage), seikowatches.com my-en · html · read
  94. 94Right Time International — SRPF53 listing, Right Time (Denver), dealer spec block (listing, sold out) · html · read
  95. 95Seiko Watch Corporation — SRPF77 product page (Prospex), seikowatches.com us-en · html · read
  96. 96Seiko Watch Corporation — SRPF79 product page (Prospex), seikowatches.com global-en · html · read
  97. 97Seiko Watch Corporation — SRPG03J1 product page (Presage), seikowatches.com global-en · html · read
  98. 98Right Time International — SRPG05 listing, Right Time (Denver), dealer spec block (listing, sold out) · html · read
  99. 99Seiko Watch Corporation — SRPG07 product page (Presage), seikowatches.com middleeast-en · html · read
  100. 100Seiko Watch Corporation — SRPG09J1 product page (Presage), seikowatches.com middleeast-en · html · read
  101. 101Seiko Watch Corporation — SRPG19 product page (Prospex), seikowatches.com middleeast-en · html · read
  102. 102Seiko Watch Corporation — SRPG27 product page (us-en), seikowatches.com · html · read
  103. 103Seiko Watch Corporation — SRPG29 product page (5 Sports), seikowatches.com us-en · html · read
  104. 104Seiko Watch Corporation — SRPG31 product page (5 Sports), seikowatches.com us-en · html · read
  105. 105Seiko Watch Corporation — SRPG33 product page (5 Sports), seikowatches.com middleeast-en · html · read
  106. 106Seiko Watch Corporation — SRPG35 product page (us-en), seikowatches.com · html · read
  107. 107Seiko Watch Corporation — SRPG37 product page (5 Sports), seikowatches.com us-en · html · read
  108. 108Seiko Watch Corporation — SRPG39 product page (5 Sports), seikowatches.com US · html · read
  109. 109Seiko Watch Corporation — SRPG41 product page (5 Sports), seikowatches.com us-en · html · read
  110. 110Seiko Watch Corporation — SRPG47 product page (Discover More), seikowatches.com sg-en · html · read
  111. 111Seiko Watch Corporation — SRPH29 product page (5 Sports), seikowatches.com global-en · html · read
  112. 112Seiko Watch Corporation — SRPH31 product page (5 Sports), seikowatches.com global-en · html · read
  113. 113Seiko Watch Corporation — SRPH33 product page (5 Sports), seikowatches.com US · html · read
  114. 114Seiko Watch Corporation — SRPJ45 product page (5 Sports), seikowatches.com us-en · html · read
  115. 115Seiko Watch Corporation — SRPJ47 product page (5 Sports), seikowatches.com global-en · html · read
  116. 116Seiko Watch Corporation — SSA343J1 product page (Presage), seikowatches.com global-en · html · read
  117. 117Right Time International — SSA345 listing, Right Time (Denver), dealer spec block (pre-owned listing, sold out 6/2025) · html · read
  118. 118Seiko Watch Corporation — SSA347 product page (Presage), seikowatches.com global-en · html · read
  119. 119Seiko Watch Corporation — SSA405J1 product page (Presage), seikowatches.com global-en · html · read
  120. 120Seiko Watch Corporation — SSA425 product page (Presage), seikowatches.com us-en · html · read
  121. 121Seiko Watch Corporation — SSA457 product page (Presage), seikowatches.com global-en · html · read
  122. 122Seiko Watch Corporation — SSC957 product page (Prospex), seikowatches.com global-en · html · read
  123. 123Seiko Watch Corporation — SSK001 product page (us-en), seikowatches.com · html · read
  124. 124Seiko Watch Corporation — SSK003 product page (us-en), seikowatches.com · html · read
  125. 125Seiko Watch Corporation — SSK005 product page (5 Sports), seikowatches.com US · html · read
  126. 126Seiko Watch Corporation — SSK059 product page (5 Sports), seikowatches.com us-en · html · read
  127. 127Seiko Watch Corporation — SUR373 product page (Discover More), seikowatches.com no-en · html · read