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Casio LW-204 manual and battery (CR2016)

Casio's operation guide for the Casio LW-204 is the PDF for module 3294: Casio operation guide 3294 (PDF) ↗. It takes a CR2016 battery. The case is 35 mm wide, 38.9 mm long (case length L, not lug to lug), and 9.4 mm thick.

Sources checked · How we source numbers
Width (W)
35 mm1
Case length (L)
38.9 mm1
not lug to lug
Thickness
9.4 mm1
Lug width
not published by Casio
Casio LW-204: size drawingCasio LW-204, round case, top and side view to scale: case diameter 35 mm, case length (Casio L) 38.9 mm, lug width — (unknown), thickness 9.4 mm. Bezel, dial and crown size are schematic.lug width —Ø 35case length (Casio L) 38.9TOPthickness 9.4SIDE
Casio LW-204, top and side, to scaleDrawing from data, not a photo · mm

Module 3294 twins

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

Codes of the Casio LW-204 family[2]LW-204

3 more codes on the same module

B640WB, B640WC, B640WMR

Module: Casio module 3294

The Casio LW-204 runs on the Casio module 3294.

Battery

Casio LW-204 specifications

Case width (W)
35 mm1
Lug to lug
not published by Casio; see case length (L)
Case length (L)
38.9 mm1Casio's L of L × W × H, measured differently from lug to lug; we never swap one for the other.
Thickness (H)
9.4 mm1
Lug width
not published by Casio
Weight
24 g1
Crystal
Resin Glass1
Water resistance
50 m1
Module
casio/32942
Battery
Accuracy
±30 s/month1
Years made
start not published
Case code
not used by Casio: the module number (module 3294) identifies the watch
Band fits
145–215 mm wrist1

On your wrist

The verdict compares the case length (L) with the flat top of your wrist. Balanced from ~14 cm, past the edges below ~12.5 cm.

= 6.7 in

Compact on a 17 cm wrist: the 38.9 mm case length (L) covers 71% 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.

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 LW-204: wrist fitCasio LW-204 on a wrist, top view to scale. case length (Casio L) 38.9 mm. Wrist 170 mm, estimated flat width 54.8 mm (circumference / 3.1). Ratio 0.71: compact.wrist, flat topwrist flat ≈ 54.8case length (Casio L) 38.9Compact · 38.9 / 54.8 = 0.71estimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Casio LW-204 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 LW-204 at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Casio LW-204: size drawingCasio LW-204, round case, top and side view to scale: case diameter 35 mm, case length (Casio L) 38.9 mm, lug width — (unknown), thickness 9.4 mm. Bezel, dial and crown size are schematic.lug width —Ø 35case length (Casio L) 38.9TOPthickness 9.4SIDE
Drawing from data, not a photo · mm
01020304050

Casio LW-204 strap size

Casio publishes no lug width for the Casio LW-204; its band is cut for wrists of 145–215 mm wrist1. 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 LW-204 filled in.

Same size as the Casio LW-204

The models nearest to the Casio LW-204 in case width and case length (L), drawn over it to scale; below, every model within 1 mm of its 38.9 mm.

Size comparison: Casio LW-204, Casio MQ-24, Casio F-91W, Casio LW-200Top-view outlines to scale on one centre. A Casio LW-204: Ø 35, L 38.9, lug —, T 9.4. B Casio MQ-24: Ø 34.9, L 38.8, lug 16, T 7.8 (vs A: Ø −0.1 L −0.1 T −1.6). C Casio F-91W: W 35.2, L 38.2, lug 18, T 8.5 (vs A: W +0.2 L −0.7 T −0.9). D Casio LW-200: Ø 34.9, L 37.9, lug —, T 11.9 (vs A: Ø −0.1 L −1 T +2.5).B Ø 34.9D Ø 34.9A Ø 35C W 35.2D L 37.9C L 38.2B L 38.8A L 38.9A Casio LW-204Ø 35 · L 38.9 · lug — · T 9.4B Casio MQ-24Ø 34.9 · L 38.8 · lug 16 · T 7.8vs A: Ø −0.1 L −0.1 T −1.6C Casio F-91WW 35.2 · L 38.2 · lug 18 · T 8.5vs A: W +0.2 L −0.7 T −0.9D Casio LW-200Ø 34.9 · L 37.9 · lug — · T 11.9vs A: Ø −0.1 L −1 T +2.5
A Casio LW-204 and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ACasio LW-204this watch
  2. BCasio MQ-24W −0.1 · L −0.1 · T −1.6 mm
  3. CCasio F-91WW +0.2 · L −0.7 · T −0.9 mm
  4. DCasio LW-200W −0.1 · L −1 · T +2.5 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 LW-204 questions

Where is the manual for the Casio LW-204?

The Casio LW-204 runs Casio module 3294, and Casio publishes the operation guide for that module as a PDF: Casio operation guide 3294. The module number is stamped on the case back.

How big is the Casio LW-204?

The Casio LW-204 measures 35 mm wide, 38.9 mm long (Casio's L, not lug to lug), 9.4 mm thick, 24 g.

Will the Casio LW-204 fit a 5.5-inch wrist?

Balanced: the Casio LW-204's 38.9 mm case length (L) takes 86% of the ~45.1 mm flat top of a 5.5-inch (14.0 cm) wrist. By the same estimate (circumference ÷ 3.1) it sits balanced from about 14 cm and overhangs the flat top on wrists under about 12.5 cm.

What battery does the Casio LW-204 take?

The Casio LW-204 takes CR2016, rated about 3 years.

What module is in the Casio LW-204?

The Casio LW-204 runs on the Casio module 3294. Casio's manual list puts 4 model codes on this module, 1 of them LW-204 codes.

What strap size does the Casio LW-204 take?

Casio does not publish the lug width for the Casio LW-204. 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 LW-204 in the watch strap size tool.

More Casio watches

Sources

Documents checked · Report a wrong number

  1. 1Casio America — LW204-1A | Black and Rose Gold Digital Watch | CASIO (product page) · html · read
  2. 2Casio Computer Co., Ltd. — Watch manual search JSON (US locale), manual_search.support.json · json · read