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Casio A-280 Manual — Module 551
One owner's manual PDF for the Casio module 551 (German only). Casio fitted it in the A-280. 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 Mar 1987.
Module specs
Battery: CR1616 (lithium)
Rated battery life: 2 years
Rated accuracy: ±15 sec/month
Casio service manual ref: S/M-235
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Watch models using this module
| Model | Released |
|---|---|
| A-280- AKA [Calendar Memo] | 1986 |
