Owner manual / German
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Casio Module 371 Manual
One owner's manual PDF for the Casio module 371 (German only). Casio's spec sheet lists one SR927W, with 3 years of battery life and accuracy within ±20 seconds a month; the module first shipped in Jun 1987.
Module specs
Battery: SR927W (silver-oxide)
Rated battery life: 3 years
Rated accuracy: ±20 sec/month
Casio service manual ref: S/M-249
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