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Module · Casio · digital module

Casio module 3240 manual and CR2025 battery

Casio's operation guide for module 3240: Casio operation guide 3240 (PDF) ↗. Casio module 3240 is a digital module by Casio, used in 3 Casio models. It runs on CR20251 for about 10 years1 and keeps time to ±30 s/month1.

Sources checked · How we source numbers
CR2025: drawing to scaleCR2025: diameter 20 mm, height 2.5 mm.Ø 20−+2.5CR2025
CR2025, the cell the Casio 3240 takesDrawing from data, not a photo · mm

Casio 3240 at a glance

Display
digital1derived
Power
battery1
Battery
CR20251
Battery life
10 years1
Accuracy
±30 s/month1
Light
LED backlight1
World time
dual time1

New to the terms? Read quartz vs automatic or watch movement types.

Watches with module 3240

3 models in 1 family share module 3240, so they share its battery, functions and manual[2].

Casio operation guide 3240 (PDF) ↗
The one model on module 3240 we have case sizes for, top view. W = case width, L = Casio case length, L2L = lug to lug, H = thickness. Drawn from the published sizes, not a photo.
  • W-8003 modelsW-800H · W-800HD · W-800HM

Running the Casio 3240

Accuracy and battery figures for the Casio 3240, as Casio prints them.

Accuracy (maker)
±30 s/month1
Battery life
10 years1

Battery for the Casio 3240

  • CR2025[1]Sizes and equivalents of the CR2025 on its page

All Casio 3240 figures

Every figure we hold for the Casio 3240, with its source. Where sources disagree, each value is shown.

Accuracy and care

Accuracy (maker)
±30 s/month1

Power

Power source
battery1
Battery
CR20251
Battery life
10 years1

Module functions

Display
digital1derived
Light
LED backlight1
Alarms
multi-function alarm (one-time or 7-time snooze), hourly time signal1
Stopwatch
1/100 s; capacity 23:59'59.991
Dual time
dual time1

Not published yet

  • Hands and functions: not published
  • Radio time signal: not published by Casio
  • Operating temperature: not published by Casio
  • Power saving: not published

Casio 3240 questions

Where is the manual for Casio module 3240?

Casio publishes the operation guide for module 3240 as a PDF: Casio operation guide 3240. The number 3240 is stamped on the case back of every watch built on it.

What battery does the Casio module 3240 take?

The Casio module 3240 takes CR2025; Casio gives 10 years of life.

Source [1]

Which watches use Casio module 3240?

3 Casio models in Casio’s manual search use module 3240, in the W-800 family.

More on movements

Sources

Documents checked · Report a wrong number

  1. 1Casio Computer Co., Ltd. — Operation guide, module 3240 (qw3240_EN.pdf) · pdf · read
  2. 2Casio Computer Co., Ltd. — Watch manual search JSON (US locale), manual_search.support.json · json · read