Casio DW-9500 / DW-9550 Manual — Module 1918

Four owner's manual PDFs for the Casio module 1918, each a different scan (English included). Casio fitted it in 6 models, including the DW-9500 and DW-9550 — the full list is below. Casio's spec sheet lists one CR2016, with 1.5 years of battery life and accuracy within ±15 seconds a month; the module first shipped in Aug 1998.