A lifetime of use. After 6 years of use as an electrician with this the third band with a replaced bezel and one new battery it's still going strong. I'll wear this
Casio G-Shock 3750 B Ja Digital Analyzer Battery Replaced | eBay
GST-B300 - maybe battery replacement? Info in comments. : r/gshock
Casio G-Shock how to replace the watch battery - YouTube
How do solar powered watches work? - Blog | Casio G-SHOCK
How To Change a Battery on a G-Shock GA-110 Watch | Watch Repair Channel - YouTube