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Seiko watch · Presage · automatic

Seiko SARX055

The Seiko SARX055 measures 40.8 mm across, 46.2 mm lug to lug, and 11 mm thick. It fits wrists from ~16.5 cm (flat-fit estimate).

Sources checked · How we source numbers
Case
40.8 mm1
2 sources disagree; show every value
  • measured 40.8 mm1
  • secondary source 41 mm2
Lug to lug
46.2 mm1
Thickness
11 mm1
Lug width
not found in our sources yet
Seiko SARX055: size drawingSeiko SARX055, round case, top and side view to scale: case diameter 40.8 mm, lug to lug 46.2 mm, lug width — (unknown), thickness 11 mm. Bezel, dial and crown size are schematic.lug width —Ø 40.8lug to lug 46.2TOPthickness 11SIDE
Seiko SARX055, top and side, to scaleDrawing from data, not a photo · mm

Seiko SARX055 specifications

Case diameter
40.8 mm1measured
2 sources disagree; show every value
  • measured 40.8 mm1
  • secondary source 41 mm2
Lug to lug
46.2 mm1measured
Thickness
11 mm1measured
Lug width
not found in our sources yet
Crystal
flat sapphire2secondary source
Water resistance
100 m2secondary source
Movement
Seiko 6R151measured · automaticSeiko 6R15 specs
Battery
none: the Seiko 6R15 is automatic
Years made
start not published
Case code
not in our data yet
Line
Presage2secondary source
Nickname
Baby GS Snowflake2secondary source

Movement: Seiko 6R15

The Seiko SARX055 runs on the Seiko 6R15, an automatic movement. 1 other model in our base uses it.

Beat rate
21,600 bph3
Power reserve
50 h4
Jewels
233
2 sources disagree; show every value
  • manufacturer 233
  • secondary source 23/245
Accuracy
−15 to +25 s/day3
Hacking seconds
Yes4
Hand winding
Yes3

Battery

none: the Seiko 6R15 is automatic

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

On your wrist

The verdict compares the lug to lug with the flat top of your wrist. Balanced from ~16.5 cm, past the edges below ~14.5 cm.

= 6.7 in

Balanced on a 17 cm wrist: the 46.2 mm lug to lug covers 84% 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 SARX055: wrist fitSeiko SARX055 on a wrist, top view to scale. lug to lug 46.2 mm. Wrist 170 mm, estimated flat width 54.8 mm (circumference / 3.1). Ratio 0.84: balanced.wrist, flat topwrist flat ≈ 54.8lug to lug 46.2Balanced · 46.2 / 54.8 = 0.84estimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Seiko SARX055 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 SARX055 at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Seiko SARX055: size drawingSeiko SARX055, round case, top and side view to scale: case diameter 40.8 mm, lug to lug 46.2 mm, lug width — (unknown), thickness 11 mm. Bezel, dial and crown size are schematic.lug width —Ø 40.8lug to lug 46.2TOPthickness 11SIDE
Drawing from data, not a photo · mm
01020304050

Seiko SARX055 strap size

Seiko publishes no lug width for the Seiko SARX055. Measure between the lugs with a caliper before buying a third-party strap.

Attachment: not published in our sources.

Find your strap length in the watch strap size tool, with the Seiko SARX055 filled in.

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

Same size as the Seiko SARX055

The models nearest to the Seiko SARX055 in case width and lug to lug, drawn over it to scale; below, every model within 1 mm of its 46.2 mm.

Size comparison: Seiko SARX055, Seiko SSC957, Seiko SRPG03, Seiko SRPG07Top-view outlines to scale on one centre. A Seiko SARX055: Ø 40.8, L2L 46.2, lug —, T 11. B Seiko SSC957: Ø 41.4, L2L 45.9, lug 21, T 13 (vs A: Ø +0.6 L2L −0.3 T +2). C Seiko SRPG03: Ø 40.8, L2L 47, lug 20, T 12 (vs A: Ø 0 L2L +0.8 T +1). D Seiko SRPG07: Ø 40.8, L2L 47, lug 20, T 12 (vs A: Ø 0 L2L +0.8 T +1).A Ø 40.8C Ø 40.8D Ø 40.8B Ø 41.4B L2L 45.9A L2L 46.2C L2L 47D L2L 47A Seiko SARX055Ø 40.8 · L2L 46.2 · lug — · T 11B Seiko SSC957Ø 41.4 · L2L 45.9 · lug 21 · T 13vs A: Ø +0.6 L2L −0.3 T +2C Seiko SRPG03Ø 40.8 · L2L 47 · lug 20 · T 12vs A: Ø 0 L2L +0.8 T +1D Seiko SRPG07Ø 40.8 · L2L 47 · lug 20 · T 12vs A: Ø 0 L2L +0.8 T +1
A Seiko SARX055 and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ASeiko SARX055this watch
  2. BSeiko SSC957W +0.6 · L2L −0.3 · T +2 mm
  3. CSeiko SRPG03W same · L2L +0.8 · T +1 mm
  4. DSeiko SRPG07W same · L2L +0.8 · T +1 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 6R15

Seiko SARX055 questions

What movement is in the Seiko SARX055?

The Seiko SARX055 runs on the Seiko 6R15, an automatic movement.

How big is the Seiko SARX055?

The Seiko SARX055 measures 40.8 mm (41 mm in a secondary source) across, 46.2 mm lug to lug, 11 mm thick.

Will the Seiko SARX055 fit a 6.5-inch wrist?

Balanced: the Seiko SARX055's 46.2 mm lug to lug takes 87% of the ~53.3 mm flat top of a 6.5-inch (16.5 cm) wrist. By the same estimate (circumference ÷ 3.1) it sits balanced from about 16.5 cm and overhangs the flat top on wrists under about 14.5 cm.

Does the Seiko SARX055 need a battery?

No. The Seiko SARX055 has no cell to replace: a wound mainspring drives its automatic Seiko 6R15.

More Seiko watches

Sources

Documents checked · Report a wrong number

  1. 1Worn & Wound — Seiko Presage SARX055 (aka Baby Snowflake) - Worn & Wound · html · read
  2. 2Worn & Wound — Introducing the Seiko Presage Baby GS Snowflake ref. SARX055 - Worn & Wound · html · read
  3. 3Seiko Watch Corporation — Automatic Diver's Watch instructions, Cal. 6R15 (EN pages) · pdf · read
  4. 4Seiko Watch Corporation — Automatic Watch instructions, Cal. 6R15 (EN pages) · pdf · read
  5. 5CaliberCorner — Seiko Caliber 6R15 watch movement page · html · read