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Casio watch · analog-digital module

Casio AQ-S810W

The Casio AQ-S810W measures 48.3 mm wide, 52.2 mm long (case length L, not lug to lug), and 13.7 mm thick. It fits wrists from ~18.5 cm (flat-fit estimate).

Sources checked · How we source numbers
Width (W)
48.3 mm1
Case length (L)
52.2 mm1
not lug to lug
Thickness
13.7 mm1
Lug width
not published by Casio
Casio AQ-S810W: size drawingCasio AQ-S810W, cushion case, top and side view to scale: case width 48.3 mm, case length (Casio L) 52.2 mm, lug width — (unknown), thickness 13.7 mm. Bezel, dial and crown size are schematic.lug width —width 48.3case length (Casio L) 52.2TOPthickness 13.7SIDE
Casio AQ-S810W, top and side, to scaleDrawing from data, not a photo · mm

Casio AQ-S810W specifications

Case width (W)
48.3 mm1
Lug to lug
not published by Casio; see case length (L)
Case length (L)
52.2 mm1Casio's L of L × W × H, measured differently from lug to lug; we never swap one for the other.
Thickness (H)
13.7 mm1
Lug width
not published by Casio
Weight
40 g1
Crystal
Resin Glass1
Water resistance
100 m1
Module
Casio module 52082 · analog-digital moduleCasio module 5208 specs
Battery
Accuracy
±30 s/month1
Years made
start not published
Case code
not used by Casio: the module number (module 5208) identifies the watch

On your wrist

The verdict compares the case length (L) with the flat top of your wrist. Balanced from ~18.5 cm, past the edges below ~16.5 cm.

= 6.7 in

At the edge on a 17 cm wrist: the 52.2 mm case length (L) covers 95% 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 AQ-S810W: wrist fitCasio AQ-S810W on a wrist, top view to scale. case length (Casio L) 52.2 mm. Wrist 170 mm, estimated flat width 54.8 mm (circumference / 3.1). Ratio 0.95: at the edge.wrist, flat topwrist flat ≈ 54.8case length (Casio L) 52.2At the edge · 52.2 / 54.8 = 0.95estimate: wrist 170 / 3.1 = 54.8 flatcompactbalancededgeoverhang0.750.891
Casio AQ-S810W 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 AQ-S810W at 1:1, next to a millimetre ruler.

1:1 · not calibrated: sizes are approximate
Casio AQ-S810W: size drawingCasio AQ-S810W, cushion case, top and side view to scale: case width 48.3 mm, case length (Casio L) 52.2 mm, lug width — (unknown), thickness 13.7 mm. Bezel, dial and crown size are schematic.lug width —width 48.3case length (Casio L) 52.2TOPthickness 13.7SIDE
Drawing from data, not a photo · mm
01020304050

Casio AQ-S810W strap size

Casio publishes no lug width for the Casio AQ-S810W. 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 AQ-S810W filled in.

Module: Casio module 5208

The Casio AQ-S810W runs on the Casio module 5208, an analog-digital module. 1 other model in our base uses it.

Power source
solar3
Battery life
10 months3
Accuracy
±30 s/month3
Light
LED, selectable duration3

Battery

Module 5208 twins

Casio's manual list puts 5 model codes on this module: same functions, same manual, often the same battery.

Codes of the Casio AQ-S810W family[2]AQ-S810W, AQ-S810WC

Other families on it with a page here

1 more codes on the same module

AMW-S850

Casio module 5208: functions, battery and manual

Same size as the Casio AQ-S810W

The models nearest to the Casio AQ-S810W in case width and case length (L), drawn over it to scale; below, every model within 1 mm of its 52.2 mm.

Size comparison: Casio AQ-S810W, Casio AEQ-110W, Casio EQB-500, Casio AE-2000Top-view outlines to scale on one centre. A Casio AQ-S810W: W 48.3, L 52.2, lug —, T 13.7. B Casio AEQ-110W: W 48.2, L 52.2, lug —, T 16.7 (vs A: W −0.1 L 0 T +3). C Casio EQB-500: Ø 48.1, L 52, lug —, T 14.1 (vs A: W −0.2 L −0.2 T +0.4). D Casio AE-2000: Ø 47.7, L 52.2, lug —, T 16 (vs A: W −0.6 L 0 T +2.3).D Ø 47.7C Ø 48.1B W 48.2A W 48.3C L 52A L 52.2B L 52.2D L 52.2A Casio AQ-S810WW 48.3 · L 52.2 · lug — · T 13.7B Casio AEQ-110WW 48.2 · L 52.2 · lug — · T 16.7vs A: W −0.1 L 0 T +3C Casio EQB-500Ø 48.1 · L 52 · lug — · T 14.1vs A: W −0.2 L −0.2 T +0.4D Casio AE-2000Ø 47.7 · L 52.2 · lug — · T 16vs A: W −0.6 L 0 T +2.3
A Casio AQ-S810W and the 3 nearest in size, on one centre, to scaleDrawing from data, not a photo · mm

Nearest in size

  1. ACasio AQ-S810Wthis watch
  2. BCasio AEQ-110WW −0.1 · L same · T +3 mm
  3. CCasio EQB-500W −0.2 · L −0.2 · T +0.4 mm
  4. DCasio AE-2000W −0.6 · L same · T +2.3 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.

Same movement: Casio module 5208

Casio AQ-S810W questions

How big is the Casio AQ-S810W?

The Casio AQ-S810W measures 48.3 mm wide, 52.2 mm long (Casio's L, not lug to lug), 13.7 mm thick, 40 g.

Will the Casio AQ-S810W fit a 7.5-inch wrist?

Balanced: the Casio AQ-S810W's 52.2 mm case length (L) takes 85% 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 18.5 cm and overhangs the flat top on wrists under about 16.5 cm.

What module is in the Casio AQ-S810W?

The Casio AQ-S810W runs on the Casio module 5208, an analog-digital module. Casio's manual list puts 5 model codes on this module, 2 of them AQ-S810W codes.

Where is the manual for the Casio AQ-S810W?

The Casio AQ-S810W runs Casio module 5208, and Casio publishes the operation guide for that module as a PDF: Casio operation guide 5208. The module number is stamped on the case back. All of the module’s models and its battery are on its page.

More Casio watches

Sources

Documents checked · Report a wrong number

  1. 1Casio America — AQS810W-1AV | Analog-Digital Black and White Watch | CASIO (product page) · html · read
  2. 2Casio Computer Co., Ltd. — Watch manual search JSON (US locale), manual_search.support.json · json · read
  3. 3Casio Computer Co., Ltd. — Operation guide, module 5208 (qw5208_EN.pdf) · pdf · read