CASIO G-SHOCK - Introducing the first full-metal addition to the continually evolving 2100 line of timepieces that inherit the legacy of the first-ever G-SHOCK, the DW-5000C. Luxe full-metal construction with a screw-back
How to replace battery for G-SHOCK watch DW-5000C 240 Module (4K) -China G-Friends- - YouTube