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Module · Casio · analog-digital module

Casio module 5121 manual

Casio's operation guide for module 5121: Casio operation guide 5121 (PDF) ↗. Casio module 5121 is an analog-digital module by Casio, used in 6 Casio models. It keeps time to ±15 s/month1.

Sources checked · How we source numbers

Casio 5121 at a glance

Display
analog-digital1derived
Power
solar1
Battery life
5 months1
Accuracy
±15 s/month1
Radio time
time calibration signal, up to 6 receptions a day1
World time
29 cities, 29 time zones1

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

Watches with module 5121

6 models in 1 family share module 5121, so they share its battery, functions and manual[2].

Casio operation guide 5121 (PDF) ↗
  • GW-30006 modelsGW-3000B · GW-3000BB · GW-3000BD · GW-3000D · GW-3000G · GW-3000M

Running the Casio 5121

Accuracy and battery figures for the Casio 5121, as Casio prints them.

Accuracy (maker)
±15 s/month1
Battery life
5 months1

Battery for the Casio 5121

The battery of the Casio 5121 is not published by Casio.

All Casio 5121 figures

Every figure we hold for the Casio 5121, with its source. Where sources disagree, each value is shown.

Accuracy and care

Accuracy (maker)
±15 s/month1

Power

Power source
solar1
Battery life
5 months1

Module functions

Display
analog-digital1derived
Alarms
daily alarm1
Stopwatch
1/100 s; capacity 23'59.991
World time
29 cities, 29 time zones1
Radio time signal
time calibration signal, up to 6 receptions a day1

Not published yet

  • Battery: not published by Casio
  • Hands and functions: not published
  • Light: not published by Casio
  • Operating temperature: not published by Casio
  • Power saving: not published

Casio 5121 questions

Where is the manual for Casio module 5121?

Casio publishes the operation guide for module 5121 as a PDF: Casio operation guide 5121. The number 5121 is stamped on the case back of every watch built on it.

Which watches use Casio module 5121?

6 Casio models in Casio’s manual search use module 5121, in the GW-3000 family.

More on movements

Sources

Documents checked · Report a wrong number

  1. 1Casio Computer Co., Ltd. — Operation guide, module 5121 (qw5121_EN.pdf) · pdf · read
  2. 2Casio Computer Co., Ltd. — Watch manual search JSON (US locale), manual_search.support.json · json · read