Casio G-Shock Digital Quartz GM-5600B-1 GM5600B-1 200M Mens WatchCasio G Shock Digital Quartz GM 5600B 1 GM5600B 1 200M Men's Watch A no frills G shock, its clean and sharp looking; a super stylish release of 2019 in old school looks, based on a completely black, stealth colour. A unique piece for its design, 200 meter water resistance and a large and square, shock resistant steel case, it features a digital stopwatch, a countdown timer and multiple alarms with easy setting and activation processes.