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Casio GM-40 Manual — Module 245
One owner's manual PDF for the Casio module 245 in English. Casio fitted it in the GM-40. Casio's spec sheet lists one BR2320, with 15 months of battery life and accuracy within ±10 seconds a month; the module first shipped in Jun 1982.
Module specs
Battery: BR2320 (lithium)
Rated battery life: 15 months
Rated accuracy: ±10 sec/month
Casio service manual ref: S/M-130
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Watch models using this module
| Model | Released |
|---|---|
| GM-40- AKA [Pyramid] | 1984 |