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Casio watch · analog-digital module

Casio G-Shock GWG-B1000 (Mudmaster)

The Casio GWG-B1000 measures 52.1 mm wide, 58.7 mm long (case length L, not lug to lug), and 16.2 mm thick. It fits wrists from ~20.5 cm (flat-fit estimate). The Casio GWG-B1000 runs on a rechargeable CTL1616 that the watch charges itself. A lithium coin CR1616 is the same size but must not be fitted in its place; check any swap in the battery swap checker.

Sources checked · How we source numbers
Width (W)
52.1 mm2
Case length (L)
58.7 mm2
not lug to lug
Thickness
16.2 mm2
Lug width
not published by Casio
Casio GWG-B1000: size drawingCasio GWG-B1000, cushion case, top and side view to scale: case width 52.1 mm, case length (Casio L) 58.7 mm, lug width — (unknown), thickness 16.2 mm. Bezel, dial and crown size are schematic.lug width —width 52.1case length (Casio L) 58.7TOPthickness 16.2SIDE
Casio GWG-B1000, top and side, to scaleDrawing from data, not a photo · mm

Casio GWG-B1000 specifications

Case width (W)
52.1 mm2
Lug to lug
not published by Casio; see case length (L)
Case length (L)
58.7 mm2Casio's L of L × W × H, measured differently from lug to lug; we never swap one for the other.
Thickness (H)
16.2 mm2
Lug width
not published by Casio
Weight
114 g2
Crystal
Sapphire crystal with anti-reflective coating2
Water resistance
200 m2
Module
Casio module 57133 · analog-digital moduleCasio module 5713 specs
Battery
Power source
Tough Solar (Solar powered)2
Battery life
6 months on rechargeable battery (operation period with normal use without exposure to light after charge)2
Accuracy
±15 s/month2
Years made
start not published
Case code
not used by Casio: the module number (module 5713) identifies the watch
Band fits
145–215 mm wrist2

On your wrist

The verdict compares the case length (L) with the flat top of your wrist. Balanced from ~20.5 cm, past the edges below ~18.5 cm.

= 6.7 in

Overhangs on a 17 cm wrist: the 58.7 mm case length (L) covers 107% of an estimated 54.8 mm flat top and runs 1.9 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.

Casio cuts the band for wrists of 14.5–21.5 cm: your wrist is inside that range.

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 GWG-B1000: wrist fitCasio GWG-B1000 on a wrist, top view to scale. case length (Casio L) 58.7 mm. Wrist 170 mm, estimated flat width 54.8 mm (circumference / 3.1). Ratio 1.07: overhangs, 1.9 mm past the flat wrist on each side.wrist, flat topwrist flat ≈ 54.8case length (Casio L) 58.7Overhangs · 58.7 / 54.8 = 1.07 · overhang 1.9 per sideestimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Casio GWG-B1000 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 GWG-B1000 at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Casio GWG-B1000: size drawingCasio GWG-B1000, cushion case, top and side view to scale: case width 52.1 mm, case length (Casio L) 58.7 mm, lug width — (unknown), thickness 16.2 mm. Bezel, dial and crown size are schematic.lug width —width 52.1case length (Casio L) 58.7TOPthickness 16.2SIDE
Drawing from data, not a photo · mm
01020304050

Casio GWG-B1000 strap size

Casio publishes no lug width for the Casio GWG-B1000; its band is cut for wrists of 145–215 mm wrist2. 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 GWG-B1000 filled in.

Module: Casio module 5713

The Casio GWG-B1000 runs on the Casio module 5713, an analog-digital module.

Power source
solar (solar panel and one rechargeable battery)1
Battery life
6 months1
Accuracy
±15 s/month1
Light
double LED light (face LED light and LCD LED backlight), full auto light1

Battery

Module 5713 twins

Casio's manual list puts 4 model codes on this module: same functions, same manual, often the same battery.

Codes of the Casio GWG-B1000 family[3]GWG-B1000, GWG-B1000EC, GWG-B1000MG, GWG-B1000TLC

Casio module 5713: functions, battery and manual

Same size as the Casio GWG-B1000

The models nearest to the Casio GWG-B1000 in case width and case length (L), drawn over it to scale; below, every model within 1 mm of its 58.7 mm.

Size comparison: Casio GWG-B1000, Casio GG-B100, Casio GW-9400, Casio GA-100Top-view outlines to scale on one centre. A Casio GWG-B1000: W 52.1, L 58.7, lug —, T 16.2. B Casio GG-B100: W 51.3, L 55.4, lug —, T 19.4 (vs A: W −0.8 L −3.3 T +3.2). C Casio GW-9400: W 53.5, L 55.2, lug —, T 18.2 (vs A: W +1.4 L −3.5 T +2). D Casio GA-100: W 51.2, L 55, lug —, T 16.9 (vs A: W −0.9 L −3.7 T +0.7).D W 51.2B W 51.3A W 52.1C W 53.5D L 55C L 55.2B L 55.4A L 58.7A Casio GWG-B1000W 52.1 · L 58.7 · lug — · T 16.2B Casio GG-B100W 51.3 · L 55.4 · lug — · T 19.4vs A: W −0.8 L −3.3 T +3.2C Casio GW-9400W 53.5 · L 55.2 · lug — · T 18.2vs A: W +1.4 L −3.5 T +2D Casio GA-100W 51.2 · L 55 · lug — · T 16.9vs A: W −0.9 L −3.7 T +0.7
A Casio GWG-B1000 and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ACasio GWG-B1000this watch
  2. BCasio GG-B100W −0.8 · L −3.3 · T +3.2 mm
  3. CCasio GW-9400W +1.4 · L −3.5 · T +2 mm
  4. DCasio GA-100W −0.9 · L −3.7 · T +0.7 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 GWG-B1000 questions

How big is the Casio GWG-B1000?

The Casio GWG-B1000 measures 52.1 mm wide, 58.7 mm long (Casio's L, not lug to lug), 16.2 mm thick, 114 g.

Will the Casio GWG-B1000 fit an 8.5-inch wrist?

Balanced: the Casio GWG-B1000's 58.7 mm case length (L) takes 84% of the ~69.6 mm flat top of an 8.5-inch (21.6 cm) wrist. By the same estimate (circumference ÷ 3.1) it sits balanced from about 20.5 cm and overhangs the flat top on wrists under about 18.5 cm.

What battery does the Casio GWG-B1000 take?

The Casio GWG-B1000 takes CTL1616.

Can I fit a regular battery in the Casio GWG-B1000 instead of the CTL1616?

The Casio GWG-B1000 runs on a rechargeable CTL1616 that the watch charges itself. A lithium coin CR1616 is the same size but must not be fitted in its place; check any swap in the battery swap checker.

What module is in the Casio GWG-B1000?

The Casio GWG-B1000 runs on the Casio module 5713, an analog-digital module. Casio's manual list puts 4 model codes on this module, 4 of them GWG-B1000 codes.

What strap size does the Casio GWG-B1000 take?

Casio does not publish the lug width for the Casio GWG-B1000. What Casio does publish is a band size: wrists of 14.5–21.5 cm, the wrist circumference its own band is cut for. That is a wrist range, not a strap width, so measure between the lugs with a caliper before you buy a third-party strap.

Find the strap length for your wrist and the Casio GWG-B1000 in the watch strap size tool.

More Casio watches

Sources

Documents checked · Report a wrong number

  1. 1Casio Computer Co., Ltd. — Watch Operation Guide 5713 (qw5713_EN.pdf) · pdf · read
  2. 2Casio America — GWGB1000-1A | G-SHOCK MASTER OF G - LAND Gray | CASIO (product page) · html · read
  3. 3Casio Computer Co., Ltd. — Watch manual search JSON (US locale), manual_search.support.json · json · read