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Casio watch · digital module

Casio G-Shock GD-350

The Casio GD-350 measures 50.8 mm wide, 53.4 mm long (case length L, not lug to lug), and 18 mm thick. It fits wrists from ~19 cm (flat-fit estimate).

Sources checked · How we source numbers
Width (W)
50.8 mm1
Case length (L)
53.4 mm1
not lug to lug
Thickness
18 mm1
Lug width
not published by Casio
Casio GD-350: size drawingCasio GD-350, rect case, top and side view to scale: case width 50.8 mm, case length (Casio L) 53.4 mm, lug width — (unknown), thickness 18 mm. Bezel, dial and crown size are schematic.lug width —width 50.8case length (Casio L) 53.4TOPthickness 18SIDE
Casio GD-350, top and side, to scaleDrawing from data, not a photo · mm

Casio GD-350 specifications

Case width (W)
50.8 mm1
Lug to lug
not published by Casio; see case length (L)
Case length (L)
53.4 mm1Casio's L of L × W × H, measured differently from lug to lug; we never swap one for the other.
Thickness (H)
18 mm1
Lug width
not published by Casio
Weight
75 g1
Crystal
Mineral Glass1
Water resistance
200 m1
Module
Casio module 34033 · digital moduleCasio module 3403 specs
Battery
Accuracy
±15 s/month1
Years made
start not published
Case code
not used by Casio: the module number (module 3403) identifies the watch

Module: Casio module 3403

The Casio GD-350 runs on the Casio module 3403, a digital module.

Power source
battery2
Battery life
5 years2
Accuracy
±15 s/month2
Light
High-brightness LED2

Battery

Module 3403 twins

Casio's manual list puts 3 model codes on this module: same functions, same manual, often the same battery.

Codes of the Casio GD-350 family[3]GD-350, GD-350BR, GD-350GB

Casio module 3403: functions, battery and manual

On your wrist

The verdict compares the case length (L) with the flat top of your wrist. Balanced from ~19 cm, past the edges below ~17 cm.

= 6.7 in

At the edge on a 17 cm wrist: the 53.4 mm case length (L) covers 97% of an estimated 54.8 mm flat top.

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 GD-350: wrist fitCasio GD-350 on a wrist, top view to scale. case length (Casio L) 53.4 mm. Wrist 170 mm, estimated flat width 54.8 mm (circumference / 3.1). Ratio 0.97: at the edge.wrist, flat topwrist flat ≈ 54.8case length (Casio L) 53.4At the edge · 53.4 / 54.8 = 0.97estimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Casio GD-350 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 GD-350 at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Casio GD-350: size drawingCasio GD-350, rect case, top and side view to scale: case width 50.8 mm, case length (Casio L) 53.4 mm, lug width — (unknown), thickness 18 mm. Bezel, dial and crown size are schematic.lug width —width 50.8case length (Casio L) 53.4TOPthickness 18SIDE
Drawing from data, not a photo · mm
01020304050

Casio GD-350 strap size

Casio publishes no lug width for the Casio GD-350. 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 GD-350 filled in.

Same size as the Casio GD-350

The models nearest to the Casio GD-350 in case width and case length (L), drawn over it to scale; below, every model within 1 mm of its 53.4 mm.

Size comparison: Casio GD-350, Casio DW-6900, Casio AE-1500, Casio G-7900Top-view outlines to scale on one centre. A Casio GD-350: W 50.8, L 53.4, lug —, T 18. B Casio DW-6900: W 50, L 53.2, lug —, T 18.7 (vs A: W −0.8 L −0.2 T +0.7). C Casio AE-1500: W 51.2, L 54.4, lug —, T 15.7 (vs A: W +0.4 L +1 T −2.3). D Casio G-7900: W 50, L 52.4, lug —, T 17.7 (vs A: W −0.8 L −1 T −0.3).B W 50D W 50A W 50.8C W 51.2D L 52.4B L 53.2A L 53.4C L 54.4A Casio GD-350W 50.8 · L 53.4 · lug — · T 18B Casio DW-6900W 50 · L 53.2 · lug — · T 18.7vs A: W −0.8 L −0.2 T +0.7C Casio AE-1500W 51.2 · L 54.4 · lug — · T 15.7vs A: W +0.4 L +1 T −2.3D Casio G-7900W 50 · L 52.4 · lug — · T 17.7vs A: W −0.8 L −1 T −0.3
A Casio GD-350 and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ACasio GD-350this watch
  2. BCasio DW-6900W −0.8 · L −0.2 · T +0.7 mm
  3. CCasio AE-1500W +0.4 · L +1 · T −2.3 mm
  4. DCasio G-7900W −0.8 · L −1 · T −0.3 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 GD-350 questions

Where is the manual for the Casio GD-350?

The Casio GD-350 runs Casio module 3403, and Casio publishes the operation guide for that module as a PDF: Casio operation guide 3403. The module number is stamped on the case back. All of the module’s models and its battery are on its page.

What battery does the Casio GD-350 take?

The Casio GD-350 takes CR2032, rated about 5 years.

How big is the Casio GD-350?

The Casio GD-350 measures 50.8 mm wide, 53.4 mm long (Casio's L, not lug to lug), 18 mm thick, 75 g.

Will the Casio GD-350 fit a 7.5-inch wrist?

Balanced: the Casio GD-350's 53.4 mm case length (L) takes 87% of the ~61.5 mm flat top of a 7.5-inch (19.1 cm) wrist. By the same estimate (circumference ÷ 3.1) it sits balanced from about 19 cm and overhangs the flat top on wrists under about 17 cm.

What module is in the Casio GD-350?

The Casio GD-350 runs on the Casio module 3403, a digital module. Casio's manual list puts 3 model codes on this module, 3 of them GD-350 codes.

More Casio watches

Sources

Documents checked · Report a wrong number

  1. 1Casio America — GD350-1 | Dark Illuminator G-SHOCK Digital Watch | CASIO (product page) · html · read
  2. 2Casio Computer Co., Ltd. — Operation Guide 3403 (qw3403_EN.pdf) · pdf · read
  3. 3Casio Computer Co., Ltd. — Watch manual search JSON (US locale), manual_search.support.json · json · read