CASIO ALT 6100 WATCH VINTAGE ALTI-THERMO TWIN SENSOR PRE G-SHOCK | #284823416
CASIO ALT-6100-1V CAL 960 TWIN SENSOR WATCH ALTI | eBay
Casio 950 Alt 6100 stuck in auto measurement. Looking through online manual I can't figure how to switch to manual measurement mode. Any advice? Do I need to let the memory fill up first? : r/casio
VTG CASIO WATCH Men Twin Sensor Alti-Thermo Black 950 ALT-6100 New Battery $19.99 - PicClick