Casio GT-002 / GT-006 Manual — Module 1814

Three owner's manual PDFs for the Casio module 1814, each a different scan (English included). Casio fitted it in the GT-002 and GT-006. Casio's spec sheet lists one CR2016, with 18 months of battery life and accuracy within ±15 seconds a month; the module first shipped in Jan 1998.