Casio BGR-30 / BGR-30S Manual — Module 2774

One owner's manual PDF for the Casio module 2774 in English. Casio fitted it in the BGR-30, BGR-30S, and BG-60. Casio's spec sheet lists two SR927W cells, with 2 years of battery life and accuracy within ±30 seconds a month; the module first shipped in May 2003.