How to Replace a G-Shock GA201-1A Battery - iFixit Repair Guide
R.I.P. my GA-100 😓 After 10 years of service it died because of water after a battery change by a shop. looking forward to buying a gw 7900 : r/ gshock
HOW TO change your battery on a G-Shock watch - YouTube
How to Change battery Mudmaster GGB-100 G-Shock Watch, Detailed steps to fix misaligned Analog Hands - YouTube