Casio BEM-106D / BEM-106SG Manual — Module 2731

Three owner's manual PDFs for the Casio module 2731, each a different scan (English included). Casio fitted it in the BEM-106D and BEM-106SG. Casio's spec sheet lists one SR621SW, with 3 years of battery life and accuracy within ±20 seconds a month; the module first shipped in Oct 2002.