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Casio watch · digital module

Casio W-800H manual and strap size (18 mm)

Casio's operation guide for the Casio W-800H is the PDF for module 3240: Casio operation guide 3240 (PDF) ↗. It takes a CR2025 battery. The case is 36.8 mm wide, 44.2 mm long (case length L, not lug to lug), and 13.4 mm thick.

Sources checked · How we source numbers
Width (W)
36.8 mm1
Case length (L)
44.2 mm1
not lug to lug
Thickness
13.4 mm1
Lug width
18 mm3
Casio W-800H: size drawingCasio W-800H, rect case, top and side view to scale: case width 36.8 mm, case length (Casio L) 44.2 mm, lug width 18 mm, thickness 13.4 mm. Bezel, dial and crown size are schematic.lug width 18width 36.8case length (Casio L) 44.2TOPthickness 13.4SIDE
Casio W-800H, top and side, to scaleDrawing from data, not a photo · mm

Module 3240 twins

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

Codes of the Casio W-800H family[6]W-800H, W-800HD, W-800HM

Casio module 3240: functions, battery and manual

Module: Casio module 3240

The Casio W-800H runs on the Casio module 3240, a digital module.

Power source
battery2
Battery life
10 years2
Accuracy
±30 s/month2
Light
LED backlight2

Battery

Casio W-800H strap size

Lug width 18 mm3seller listing: an 18 mm strap with 18 mm spring bars fits between the lugs. 8 other models take 18 mm.

Attachment: not published in our sources.

Find your strap length in the watch strap size tool, with the Casio W-800H filled in.

18 mm strap: strap diagramTwo-piece strap laid flat (18 mm strap). Lug width 18 mm. Short piece — (unknown), long piece — (unknown). Buckle, keepers and holes are schematic.short —long —lug 18lug 18strap length —18 mm strap
18 mm at the lugs; lengths depend on your wristDrawing from data, not a photo · mm

Casio W-800H specifications

Case width (W)
36.8 mm1
Lug to lug
not published by Casio; see case length (L)
Case length (L)
44.2 mm1Casio's L of L × W × H, measured differently from lug to lug; we never swap one for the other.
Thickness (H)
13.4 mm1
Lug width
18 mm3seller listing18 mm watches
Weight
37 g1
Crystal
Resin Glass1
Water resistance
100 m1
Module
Casio module 32406
2 sources disagree; show every value
  • manufacturer Casio module 32406
  • manufacturer Casio module 30926
 · digital moduleCasio module 3240 specs
Battery
Accuracy
±30 s/month1
Years made
start not published
Case code
not used by Casio: the module number (module 3240) 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 ~15.5 cm, past the edges below ~14 cm.

= 6.7 in

Balanced on a 17 cm wrist: the 44.2 mm case length (L) covers 81% 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 W-800H: wrist fitCasio W-800H on a wrist, top view to scale. case length (Casio L) 44.2 mm. Wrist 170 mm, estimated flat width 54.8 mm (circumference / 3.1). Ratio 0.81: balanced.wrist, flat topwrist flat ≈ 54.8case length (Casio L) 44.2Balanced · 44.2 / 54.8 = 0.81estimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Casio W-800H 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 W-800H at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Casio W-800H: size drawingCasio W-800H, rect case, top and side view to scale: case width 36.8 mm, case length (Casio L) 44.2 mm, lug width 18 mm, thickness 13.4 mm. Bezel, dial and crown size are schematic.lug width 18width 36.8case length (Casio L) 44.2TOPthickness 13.4SIDE
Drawing from data, not a photo · mm
01020304050

Same size as the Casio W-800H

The models nearest to the Casio W-800H in case width and case length (L), drawn over it to scale; below, every model within 1 mm of its 44.2 mm.

Size comparison: Casio W-800H, Casio W-96H, Casio CA-53W, Casio W-201Top-view outlines to scale on one centre. A Casio W-800H: W 36.8, L 44.2, lug 18, T 13.4. B Casio W-96H: W 35.7, L 43.9, lug —, T 12.5 (vs A: W −1.1 L −0.3 T −0.9). C Casio CA-53W: W 34.4, L 43.2, lug 18, T 8.2 (vs A: W −2.4 L −1 lug 0 T −5.2). D Casio W-201: Ø 36, L 40.4, lug —, T 10 (vs A: W −0.8 L −3.8 T −3.4).C W 34.4B W 35.7D Ø 36A W 36.8D L 40.4C L 43.2B L 43.9A L 44.2A Casio W-800HW 36.8 · L 44.2 · lug 18 · T 13.4B Casio W-96HW 35.7 · L 43.9 · lug — · T 12.5vs A: W −1.1 L −0.3 T −0.9C Casio CA-53WW 34.4 · L 43.2 · lug 18 · T 8.2vs A: W −2.4 L −1 lug 0 T −5.2D Casio W-201Ø 36 · L 40.4 · lug — · T 10vs A: W −0.8 L −3.8 T −3.4
A Casio W-800H and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ACasio W-800Hthis watch
  2. BCasio W-96HW −1.1 · L −0.3 · T −0.9 mm
  3. CCasio CA-53WW −2.4 · L −1 · T −5.2 mm
  4. DCasio W-201W −0.8 · L −3.8 · T −3.4 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 W-800H questions

Where is the manual for the Casio W-800H?

The Casio W-800H runs Casio module 3240, and Casio publishes the operation guide for that module as a PDF: Casio operation guide 3240. The module number is stamped on the case back. All of the module’s models and its battery are on its page.

What strap size does the Casio W-800H take?

The Casio W-800H measures 18 mm between the lugs, so it takes an 18 mm strap with 18 mm spring bars. 8 other models in our base share that width.

Find the strap length for your wrist and the Casio W-800H in the watch strap size tool.

How big is the Casio W-800H?

The Casio W-800H measures 36.8 mm wide, 44.2 mm long (Casio's L, not lug to lug), 13.4 mm thick, 37 g.

Will the Casio W-800H fit a 6.5-inch wrist?

Balanced: the Casio W-800H's 44.2 mm case length (L) takes 83% 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 15.5 cm and overhangs the flat top on wrists under about 14 cm.

What battery does the Casio W-800H take?

The Casio W-800H takes CR2025, rated about 10 years.

What module is in the Casio W-800H?

The Casio W-800H runs on the Casio module 3240, a digital module. Casio's manual list puts 3 model codes on this module, 3 of them W-800H codes.

More Casio watches

Sources

Documents checked · Report a wrong number

  1. 1Casio America — W800H-1AV | Black Digital Watch | CASIO (product page) · html · read
  2. 2Casio Computer Co., Ltd. — Operation guide, module 3240 (qw3240_EN.pdf) · pdf · read
  3. 3Jamtangan.com — Casio General W-800H-1B W-800H-1BVDF Black Digital Dial · html · read
  4. 4Jamtangan.com — Casio General W800H-5AVDF Digital Dial Brown Resin Band · html · read
  5. 5eBay (third-party seller listing) — Casio W-800H-1AVES Vintage Unisex Watch · html · read
  6. 6Casio Computer Co., Ltd. — Watch manual search JSON (US locale), manual_search.support.json · json · read