Got this GShock GW-M5600 since 2008. Battery went to low only once after I started getting into Seikos. It's my time reference when I set my automatic watches :) : r/BuyItForLife
Casio GW-S5600U-1JF G-SHOCK GW-M5600 Series black Solar Radio Carbon Fiber Watch | eBay
GW-M5600-Tamio-Okuda
Casio G-Shock GW-M5600. | Casio, Casio g shock, Casio watch