Casio DW-6600 / DW-6600B Manual — Module 1199

Four owner's manual PDFs for the Casio module 1199, each a different scan (English included). Casio fitted it in 13 models, including the DW-6600 and DW-6600B — the full list is below. Casio's spec sheet lists one CR2016, with 2 years of battery life and accuracy within ±15 seconds a month; the module first shipped in Jun 1994.