Skip to content
WatchtheDetails

Casio watch · digital module

Casio GW-9400 manual and dimensions

Casio's operation guide for the Casio GW-9400 is the PDF for module 3410: Casio operation guide 3410 (PDF) ↗. The case is 53.5 mm wide, 55.2 mm long (case length L, not lug to lug), and 18.2 mm thick.

Sources checked · How we source numbers
Width (W)
53.5 mm1
Case length (L)
55.2 mm1
not lug to lug
Thickness
18.2 mm1
Lug width
not published by Casio
Casio GW-9400: size drawingCasio GW-9400, rect case, top and side view to scale: case width 53.5 mm, case length (Casio L) 55.2 mm, lug width — (unknown), thickness 18.2 mm. Bezel, dial and crown size are schematic.lug width —width 53.5case length (Casio L) 55.2TOPthickness 18.2SIDE
Casio GW-9400, top and side, to scaleDrawing from data, not a photo · mm

Module 3410 twins

Casio's manual list puts 22 model codes on this module: same functions, same manual, often the same battery.

Codes of the Casio GW-9400 family[2]GW-9400, GW-9400BJ, GW-9400BTJ, GW-9400CMJ, GW-9400DCJ, GW-9400FBJ, GW-9400J, GW-9400KJ, GW-9400NFST, GW-9400NVJ, GW-9400RDJ, GW-9400SRJ, GW-9400Y

9 more codes on the same module

GW-4000SC, GW-9401KJ, GW-9402KJ, GW-9403KJ, GW-9404KJ, GW-9405KJ, GW-9406KJ, GW-9407KJ, GW-9430EJ

Casio module 3410: functions, battery and manual

Module: Casio module 3410

The Casio GW-9400 runs on the Casio module 3410, a digital module.

Power source
solar panel and rechargeable battery3
Battery life
8 months3
Accuracy
±15 s/month3
Light
LED light; selectable illumination duration (approximately 1.5 seconds or 3 seconds); Auto Light Switch3

Battery

Casio GW-9400 specifications

Case width (W)
53.5 mm1
Lug to lug
not published by Casio; see case length (L)
Case length (L)
55.2 mm1Casio's L of L × W × H, measured differently from lug to lug; we never swap one for the other.
Thickness (H)
18.2 mm1
Lug width
not published by Casio
Weight
93 g1
Crystal
Mineral Glass1
Water resistance
200 m1
Module
Casio module 34102 · digital moduleCasio module 3410 specs
Battery
Accuracy
±15 s/month1
Years made
start not published
Case code
not used by Casio: the module number (module 3410) identifies the watch

On your wrist

The verdict compares the case length (L) with the flat top of your wrist. Balanced from ~19.5 cm, past the edges below ~17.5 cm.

= 6.7 in

Overhangs on a 17 cm wrist: the 55.2 mm case length (L) covers 101% of an estimated 54.8 mm flat top and runs 0.2 mm past it on each side.

Casio publishes no lug-to-lug for this model, so the verdict uses its case length (L). The strap or bracelet joins inside that length, which makes this a cautious estimate.

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.

Casio GW-9400: wrist fitCasio GW-9400 on a wrist, top view to scale. case length (Casio L) 55.2 mm. Wrist 170 mm, estimated flat width 54.8 mm (circumference / 3.1). Ratio 1.01: overhangs, 0.2 mm past the flat wrist on each side.wrist, flat topwrist flat ≈ 54.8case length (Casio L) 55.2Overhangs · 55.2 / 54.8 = 1.01 · overhang 0.2 per sideestimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Casio GW-9400 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 Casio GW-9400 at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Casio GW-9400: size drawingCasio GW-9400, rect case, top and side view to scale: case width 53.5 mm, case length (Casio L) 55.2 mm, lug width — (unknown), thickness 18.2 mm. Bezel, dial and crown size are schematic.lug width —width 53.5case length (Casio L) 55.2TOPthickness 18.2SIDE
Drawing from data, not a photo · mm
01020304050

Casio GW-9400 strap size

Casio publishes no lug width for the Casio GW-9400. 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 Casio GW-9400 filled in.

Same size as the Casio GW-9400

The models nearest to the Casio GW-9400 in case width and case length (L), drawn over it to scale; below, every model within 1 mm of its 55.2 mm.

Size comparison: Casio GW-9400, Casio SGW-1000, Casio PRG-270, Casio GG-1000Top-view outlines to scale on one centre. A Casio GW-9400: W 53.5, L 55.2, lug —, T 18.2. B Casio SGW-1000: Ø 54.1, L 54.7, lug —, T 15.3 (vs A: W +0.6 L −0.5 T −2.9). C Casio PRG-270: Ø 52.4, L 54.6, lug —, T 15 (vs A: W −1.1 L −0.6 T −3.2). D Casio GG-1000: W 55.3, L 56.2, lug —, T 17.3 (vs A: W +1.8 L +1 T −0.9).C Ø 52.4A W 53.5B Ø 54.1D W 55.3C L 54.6B L 54.7A L 55.2D L 56.2A Casio GW-9400W 53.5 · L 55.2 · lug — · T 18.2B Casio SGW-1000Ø 54.1 · L 54.7 · lug — · T 15.3vs A: W +0.6 L −0.5 T −2.9C Casio PRG-270Ø 52.4 · L 54.6 · lug — · T 15vs A: W −1.1 L −0.6 T −3.2D Casio GG-1000W 55.3 · L 56.2 · lug — · T 17.3vs A: W +1.8 L +1 T −0.9
A Casio GW-9400 and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ACasio GW-9400this watch
  2. BCasio SGW-1000W +0.6 · L −0.5 · T −2.9 mm
  3. CCasio PRG-270W −1.1 · L −0.6 · T −3.2 mm
  4. DCasio GG-1000W +1.8 · L +1 · T −0.9 mm

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

Casio GW-9400 questions

Where is the manual for the Casio GW-9400?

The Casio GW-9400 runs Casio module 3410, and Casio publishes the operation guide for that module as a PDF: Casio operation guide 3410. The module number is stamped on the case back. All of the module’s models and its battery are on its page.

How big is the Casio GW-9400?

The Casio GW-9400 measures 53.5 mm wide, 55.2 mm long (Casio's L, not lug to lug), 18.2 mm thick, 93 g.

Will the Casio GW-9400 fit an 8-inch wrist?

Balanced: the Casio GW-9400's 55.2 mm case length (L) takes 84% of the ~65.5 mm flat top of an 8-inch (20.3 cm) wrist. By the same estimate (circumference ÷ 3.1) it sits balanced from about 19.5 cm and overhangs the flat top on wrists under about 17.5 cm.

What module is in the Casio GW-9400?

The Casio GW-9400 runs on the Casio module 3410, a digital module. Casio's manual list puts 22 model codes on this module, 13 of them GW-9400 codes.

More Casio watches

Sources

Documents checked · Report a wrong number

  1. 1Casio America — GW9400-1 | Black Triple Sensor Rangeman Men's Watch G-SHOCK | CASIO · html · read
  2. 2Casio Computer Co., Ltd. — Watch manual search JSON (US locale), manual_search.support.json · json · read
  3. 3Casio Computer Co., Ltd. — Operation Guide 3410 (qw3410_EN.pdf) · pdf · read