Casio BG-1300G / BG-1302 Manual — Module 3120

One owner's manual PDF for the Casio module 3120 in English. Casio fitted it in 5 models, including the BG-1300G and BG-1302 — the full list is below. Casio's spec sheet lists one CR1616, with 4 years of battery life and accuracy within ±30 seconds a month; the module first shipped in Oct 2007.