Casio DW-8900 / MRG-100 Manual — Module 1569

Two owner's manual PDFs for the Casio module 1569, each a different scan (English included). Casio fitted it in 11 models, including the DW-8900 and MRG-100 — the full list is below. Casio's spec sheet lists one CR1216, with 15 months of battery life and accuracy within ±15 seconds a month; the module first shipped in Oct 1996.