Casio BGM-100 Manual — Module 1807

Seven owner's manual PDFs for the Casio module 1807, each a different scan (English included). Casio fitted it in the BGM-100. Casio's spec sheet lists one SR1120W and a SR621W (for EL) backup cell, with 15 months of battery life and accuracy within ±15 seconds a month; the module first shipped in Oct 1997.