Casio GW-1001 / GW-1101 Manual — Modules 2753 / 3333

One owner's manual PDF for the Casio module 2753 in English. Casio fitted it in the GW-1001 and GW-1101. The same document also covers module 3333. For module 2753, Casio's spec sheet lists one CTL1616, with 10 months of battery life and accuracy within ±15 seconds a month; the module first shipped in May 2004.