Casio DW-56RT / DW-56RTA Manual — Module 2991

One owner's manual PDF for the Casio module 2991 in English. Casio fitted it in 5 models, including the DW-56RT and DW-56RTA — the full list is below. Casio's spec sheet lists one CR2016, with 5 years of battery life and accuracy within ±15 seconds a month; the module first shipped in Jan 2006.