CASIO G-SHOCK - What does "Mud-Resistant" actually mean? Long story short: Thanks to an extremely airtight screw lock, no micro-particles get into the watch. In addition, all buttons are surrounded by a
Casio G-Shock GD-100-1AER Review | WatchCrunch
G-SHOCK Official Website | CASIO
Casio G-Shock GA-2100 is one of the four most iconic models