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Seiko watch · Presage · automatic

Seiko SRPD97

The Seiko SRPD97 measures 38.3 mm across, 43.6 mm lug to lug, and 11.2 mm thick, with 20 mm lugs. It fits wrists from ~15.5 cm (flat-fit estimate).

Sources checked · How we source numbers
Case
38.3 mm1
Lug to lug
43.6 mm1
Thickness
11.2 mm1
Lug width
20 mm1
Seiko SRPD97: size drawingSeiko SRPD97, round case, top and side view to scale: case diameter 38.3 mm, lug to lug 43.6 mm, lug width 20 mm, thickness 11.2 mm. Bezel, dial and crown size are schematic.lug width 20Ø 38.3lug to lug 43.6TOPthickness 11.2SIDE
Seiko SRPD97, top and side, to scaleDrawing from data, not a photo · mm

Seiko SRPD97 specifications

Case diameter
38.3 mm1
Lug to lug
43.6 mm1
Thickness
11.2 mm1
Lug width
20 mm120 mm watches
Weight
121 g1
Crystal
Curved sapphire crystal1
Water resistance
Splash Resistant1
Movement
Seiko 4R351 · automaticSeiko 4R35 specs
Battery
none: the Seiko 4R35 is automatic
Years made
start not published
Case code
not in our data yet

On your wrist

The verdict compares the lug to lug with the flat top of your wrist. Balanced from ~15.5 cm, past the edges below ~14 cm.

= 6.7 in

Balanced on a 17 cm wrist: the 43.6 mm lug to lug covers 80% of an estimated 54.8 mm flat top.

Flat top = circumference ÷ 3.1, a community convention, not a measurement of your arm. Compact ≤ 0.75 of the flat top, balanced ≤ 0.89, at the edge ≤ 1. Compare more watches in the watch size calculator.

Seiko SRPD97: wrist fitSeiko SRPD97 on a wrist, top view to scale. lug to lug 43.6 mm. Wrist 170 mm, estimated flat width 54.8 mm (circumference / 3.1). Ratio 0.80: balanced.wrist, flat topwrist flat ≈ 54.8lug to lug 43.6Balanced · 43.6 / 54.8 = 0.80estimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Seiko SRPD97 on a 17 cm wristDrawing from data, not a photo · mm

Actual size on your screen

Calibrate once with a bank card and the drawing shows the Seiko SRPD97 at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Seiko SRPD97: size drawingSeiko SRPD97, round case, top and side view to scale: case diameter 38.3 mm, lug to lug 43.6 mm, lug width 20 mm, thickness 11.2 mm. Bezel, dial and crown size are schematic.lug width 20Ø 38.3lug to lug 43.6TOPthickness 11.2SIDE
Drawing from data, not a photo · mm
01020304050

Seiko SRPD97 strap size

Lug width 20 mm1: a 20 mm strap with 20 mm spring bars fits between the lugs. 62 other models take 20 mm.

Attachment: not published in our sources.

Find your strap length in the watch strap size tool, with the Seiko SRPD97 filled in.

On a bracelet? How to remove watch links to size it to your wrist.

20 mm strap: strap diagramTwo-piece strap laid flat (20 mm strap). Lug width 20 mm. Short piece — (unknown), long piece — (unknown). Buckle, keepers and holes are schematic.short —long —lug 20lug 20strap length —20 mm strap
20 mm at the lugs; lengths depend on your wristDrawing from data, not a photo · mm

Movement: Seiko 4R35

The Seiko SRPD97 runs on the Seiko 4R35, an automatic movement. 25 other models in our base use it.

Beat rate
21,600 bph2
Power reserve
41 h2
2 sources disagree; show every value
  • manufacturer 41 h2
  • secondary source 40, 41 h4
Jewels
232
2 sources disagree; show every value
  • manufacturer 232
  • secondary source 23, 244
Accuracy
−35 to +45 s/day3
Hacking seconds
Yes2
Hand winding
Yes2

Battery

none: the Seiko 4R35 is automatic

A mechanical watch has no cell to replace; it needs a service instead.

Same size as the Seiko SRPD97

The models nearest to the Seiko SRPD97 in case width and lug to lug, drawn over it to scale; below, every model within 1 mm of its 43.6 mm.

Size comparison: Seiko SRPD97, Islander ISL-05, Seiko SRPE41, Seiko SRPE43Top-view outlines to scale on one centre. A Seiko SRPD97: Ø 38.3, L2L 43.6, lug 20, T 11.2. B Islander ISL-05: Ø 38, L2L 44.5, lug —, T 13 (vs A: Ø −0.3 L2L +0.9 T +1.8). C Seiko SRPE41: Ø 38.5, L2L 45.4, lug 20, T 11.8 (vs A: Ø +0.2 L2L +1.8 lug 0 T +0.6). D Seiko SRPE43: Ø 38.5, L2L 45.4, lug 20, T 11.8 (vs A: Ø +0.2 L2L +1.8 lug 0 T +0.6).B Ø 38A Ø 38.3C Ø 38.5D Ø 38.5A L2L 43.6B L2L 44.5C L2L 45.4D L2L 45.4A Seiko SRPD97Ø 38.3 · L2L 43.6 · lug 20 · T 11.2B Islander ISL-05Ø 38 · L2L 44.5 · lug — · T 13vs A: Ø −0.3 L2L +0.9 T +1.8C Seiko SRPE41Ø 38.5 · L2L 45.4 · lug 20 · T 11.8vs A: Ø +0.2 L2L +1.8 lug 0 T +0.6D Seiko SRPE43Ø 38.5 · L2L 45.4 · lug 20 · T 11.8vs A: Ø +0.2 L2L +1.8 lug 0 T +0.6
A Seiko SRPD97 and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ASeiko SRPD97this watch
  2. BIslander ISL-05W −0.3 · L2L +0.9 · T +1.8 mm
  3. CSeiko SRPE41W +0.2 · L2L +1.8 · T +0.6 mm
  4. DSeiko SRPE43W +0.2 · L2L +1.8 · T +0.6 mm

Differences against A in mm: W case width, L2L lug to lug, T thickness. Nearest by width and length together, from the published sizes.

Same movement: Seiko 4R35

All 26 models on the Seiko 4R35

Seiko SRPD97 questions

How big is the Seiko SRPD97?

The Seiko SRPD97 measures 38.3 mm across, 43.6 mm lug to lug, 11.2 mm thick, 121 g.

Will the Seiko SRPD97 fit a 6-inch wrist?

Balanced: the Seiko SRPD97's 43.6 mm lug to lug takes 89% of the ~49.2 mm flat top of a 6-inch (15.2 cm) wrist. By the same estimate (circumference ÷ 3.1) it sits balanced from about 15.5 cm and overhangs the flat top on wrists under about 14 cm.

Does the Seiko SRPD97 need a battery?

No. The Seiko SRPD97 has no cell to replace: a wound mainspring drives its automatic Seiko 4R35.

What movement is in the Seiko SRPD97?

The Seiko SRPD97 runs on the Seiko 4R35, an automatic movement.

What strap size does the Seiko SRPD97 take?

The Seiko SRPD97 measures 20 mm between the lugs, so it takes a 20 mm strap with 20 mm spring bars. 62 other models in our base share that width.

Find the strap length for your wrist and the Seiko SRPD97 in the watch strap size tool.

More Seiko watches

Sources

Documents checked · Report a wrong number

  1. 1Seiko Watch Corporation — SRPD97J1 product page (Presage), seikowatches.com global-en · html · read
  2. 2Seiko Watch Corporation — Instructions: Seiko Automatic Diver's Watch Cal. 4R15/4R16/4R35/4R36/7S26/7S35/7S36 (English) · pdf · read
  3. 3Seiko Watch Corporation — Instructions: Diver's Watch for Air Diving, Cal. 4R35 / 4R36 (English) · pdf · read
  4. 4Grail Watch — Grail Watch Reference: Seiko Cal. 4R35 · html · read
  5. 5Seiko Watch Corporation — Instructions: Mechanical watch, Cal. 4R35 / 4R36 / 4R37 / 4R38 / 4R71 / 4R72 / 4R39 (English) · pdf · read