Casio G-303B / G-520D Manual — Module 2759

One owner's manual PDF for the Casio module 2759 in English. Casio fitted it in 8 models, including the G-303B and G-520D — the full list is below. Casio's spec sheet lists two SR927W cells, with 3 years of battery life and accuracy within ±15 seconds a month; the module first shipped in Feb 2004.