Casio DW-003X / DW-003IS Manual — Module 1596

Three owner's manual PDFs for the Casio module 1596, each a different scan (English included). Casio fitted it in the DW-003X and DW-003IS. 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 Nov 1996.