Casio GS-1100 / GS-1100B Manual — Module 4777

One owner's manual PDF for the Casio module 4777 in English. Casio fitted it in 6 models, including the GS-1100 and GS-1100B — the full list is below. Casio's spec sheet lists one CTL1025, with 5 months of battery life and accuracy within ±20 seconds a month; the module first shipped in Aug 2007.