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Casio watch · digital module

Casio F-108 manual, battery (CR2016) and size

Casio's operation guide for the Casio F-108 is the PDF for module 3224: Casio operation guide 3224 (PDF) ↗. It takes a CR2016 battery. The case is 42.6 mm wide, 44.4 mm long (case length L, not lug to lug), and 10.3 mm thick.

Sources checked · How we source numbers
Width (W)
42.6 mm1
Case length (L)
44.4 mm1
not lug to lug
Thickness
10.3 mm1
Lug width
not published by Casio
Casio F-108: size drawingCasio F-108, rect case, top and side view to scale: case width 42.6 mm, case length (Casio L) 44.4 mm, lug width — (unknown), thickness 10.3 mm. Bezel, dial and crown size are schematic.lug width —width 42.6case length (Casio L) 44.4TOPthickness 10.3SIDE
Casio F-108, top and side, to scaleDrawing from data, not a photo · mm

Module 3224 twins

Casio's manual list puts 11 model codes on this module: same functions, same manual, often the same battery.

Codes of the Casio F-108 family[3]F-108WH, F-108WHC

Other families on it with a page here

4 more codes on the same module

W-219H, W-219HB, W-219HC, W-219HD

Casio module 3224: functions, battery and manual

Module: Casio module 3224

The Casio F-108 runs on the Casio module 3224, a digital module. 1 other model in our base uses it.

Power source
battery2
Battery life
7 years2
Accuracy
±30 s/month2
Light
LED (light-emitting diode)2

Battery

Casio F-108 specifications

Case width (W)
42.6 mm1
Lug to lug
not published by Casio; see case length (L)
Case length (L)
44.4 mm1Casio's L of L × W × H, measured differently from lug to lug; we never swap one for the other.
Thickness (H)
10.3 mm1
Lug width
not published by Casio
Weight
31 g1
Crystal
Resin Glass1
Water resistance
Water Resistant1
Module
Casio module 32243 · digital moduleCasio module 3224 specs
Battery
Accuracy
±30 s/month1
Years made
start not published
Case code
not used by Casio: the module number (module 3224) 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 44.4 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 F-108: wrist fitCasio F-108 on a wrist, top view to scale. case length (Casio L) 44.4 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) 44.4Balanced · 44.4 / 54.8 = 0.81estimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Casio F-108 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 F-108 at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Casio F-108: size drawingCasio F-108, rect case, top and side view to scale: case width 42.6 mm, case length (Casio L) 44.4 mm, lug width — (unknown), thickness 10.3 mm. Bezel, dial and crown size are schematic.lug width —width 42.6case length (Casio L) 44.4TOPthickness 10.3SIDE
Drawing from data, not a photo · mm
01020304050

Casio F-108 strap size

Casio publishes no lug width for the Casio F-108; 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 F-108 filled in.

Same size as the Casio F-108

The models nearest to the Casio F-108 in case width and case length (L), drawn over it to scale; below, every model within 1 mm of its 44.4 mm.

Size comparison: Casio F-108, Casio W-218H, Casio AE-1200WH, Casio AE-1300WHTop-view outlines to scale on one centre. A Casio F-108: W 42.6, L 44.4, lug —, T 10.3. B Casio W-218H: W 43.2, L 44.4, lug —, T 10.8 (vs A: W +0.6 L 0 T +0.5). C Casio AE-1200WH: W 42.1, L 45, lug 18, T 12.5 (vs A: W −0.5 L +0.6 T +2.2). D Casio AE-1300WH: Ø 42.1, L 45, lug —, T 12.5 (vs A: W −0.5 L +0.6 T +2.2).C W 42.1D Ø 42.1A W 42.6B W 43.2A L 44.4B L 44.4C L 45D L 45A Casio F-108W 42.6 · L 44.4 · lug — · T 10.3B Casio W-218HW 43.2 · L 44.4 · lug — · T 10.8vs A: W +0.6 L 0 T +0.5C Casio AE-1200WHW 42.1 · L 45 · lug 18 · T 12.5vs A: W −0.5 L +0.6 T +2.2D Casio AE-1300WHØ 42.1 · L 45 · lug — · T 12.5vs A: W −0.5 L +0.6 T +2.2
A Casio F-108 and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ACasio F-108this watch
  2. BCasio W-218HW +0.6 · L same · T +0.5 mm
  3. CCasio AE-1200WHW −0.5 · L +0.6 · T +2.2 mm
  4. DCasio AE-1300WHW −0.5 · L +0.6 · T +2.2 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.

Same movement: Casio module 3224

Casio F-108 questions

Where is the manual for the Casio F-108?

The Casio F-108 runs Casio module 3224, and Casio publishes the operation guide for that module as a PDF: Casio operation guide 3224. 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 F-108?

The Casio F-108 measures 42.6 mm wide, 44.4 mm long (Casio's L, not lug to lug), 10.3 mm thick, 31 g.

Will the Casio F-108 fit a 6.5-inch wrist?

Balanced: the Casio F-108's 44.4 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 F-108 take?

The Casio F-108 takes CR2016, rated about 7 years.

What module is in the Casio F-108?

The Casio F-108 runs on the Casio module 3224, a digital module. Casio's manual list puts 11 model codes on this module, 2 of them F-108 codes.

What strap size does the Casio F-108 take?

Casio does not publish the lug width for the Casio F-108. 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 F-108 in the watch strap size tool.

More Casio watches

Sources

Documents checked · Report a wrong number

  1. 1Casio America — F108WH-1A | All Black Digital Watch | CASIO · html · read
  2. 2Casio Computer Co., Ltd. — Operation Guide 3224 (qw3224_EN.pdf) · pdf · read
  3. 3Casio Computer Co., Ltd. — Watch manual search JSON (US locale), manual_search.support.json · json · read