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Casio GS-310 / MRG-131 Manual — Module 2339
One owner's manual PDF for the Casio module 2339 in English. Casio fitted it in 4 models, including the GS-310 and MRG-131 — the full list is below. Casio's spec sheet lists one CR1616, with 2 years of battery life and accuracy within ±15 seconds a month; the module first shipped in Oct 2000.
Module specs
Battery: CR1616 (lithium)
Rated battery life: 2 years
Rated accuracy: ±15 sec/month
Casio service manual ref: S/M-716
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Watch models using this module
| Model | Released |
|---|---|
| GS-310 | - |
| MRG-131 | - |
| MTG-510 | - |
| MTG-530 | - |