How To Change a Battery on a G-Shock GA-110 Watch | Watch Repair Channel - YouTube
GST-B300 - maybe battery replacement? Info in comments. : r/gshock
How to Change G-SHOCK Watch Battery | CASIO - YouTube
Battery replacement- Any suggestion on how to replace the batteries for my Gshock. Is it advisable to change it myself or from an authorized store? : r/gshock
How To Change Battery and AC Reset CASIO G-Shock GA-100CF Watch | SolimBD | DIY - YouTube