OLD WATCH SHOP

Casio BG-80 / BG-81 Manual — Module 4770

One owner's manual PDF for the Casio module 4770 in English. Casio fitted it in the BG-80, BG-81, and BG-80PP. Casio's spec sheet lists two SR726W cells, with 2 years of battery life and accuracy within ±30 seconds a month; the module first shipped in May 2007.

Module details

Brand: Casio

PDF files: 1

Released: May 2007

Mapped models: 3

Module specs

Battery: SR726W x2 (silver-oxide)

Rated battery life: 2 years

Rated accuracy: ±30 sec/month

Casio service manual ref: S/M-991

Open Casio battery finder

Owner manuals

Watch models using this module

ModelReleased
BG-802007
BG-812007
BG-80PP2008