Casio Skeleton Series Gma-S2100Sk-4Aer Unisex Watch The GMA-S2100SKE is part of the all new Skeleton Collection, featuring futuristic transparent bands and bezels. Based on the future classic 2100 octagonal shape, it features G-SHOCK benchmarks of shock resisitancy, 200M water resistancy and tough mineral glass. Packed with functions and stylish details, but in a smaller case making it ideal for a smaller wrist. 24Hr Display: Y Depth: 11.2 MM Height: 42.9 MM Width: 46.2 MM Case height (in cm): 4.2 Case Length (in cm): 46 Case Shape: Round Case Width (in cm): 1.1 Fastening Type: Strap Buckle Glass: Mineral Movement: Japanese Quartz (battery) Water Resistant: Y 5 Daily Alarm Function Auto Calendar Countdown Timer + Stopwatch Carbon Core Guard Structure Display Illumination Neo Brite coating Shock resistant World Time