Casio BGW-100 / BGW-100K Manual — Module 2050

One owner's manual PDF for the Casio module 2050 in English. Casio fitted it in 4 models, including the BGW-100 and BGW-100K — the full list is below. Casio's spec sheet lists one CR1620, with 18 months of battery life and accuracy within ±15 seconds a month; the module first shipped in Jun 1999.