Casio BGD-101 / BGD-103 Manual — Module 3165

Two owner's manual PDFs for the Casio module 3165, each a different scan (English included). Casio fitted it in the BGD-101, BGD-103, and BGD-105. Casio's spec sheet lists one CR1616, with 2 years of battery life and accuracy within ±30 seconds a month; the module first shipped in Oct 2008.