Casio DW-003XS / DW-9000AS Manual — Module 1647

Two owner's manual PDFs for the Casio module 1647, each a different scan (English included). Casio fitted it in 8 models, including the DW-003XS and DW-9000AS — 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 Apr 1997.