Casio G-Shock GW-B5600BC-1BJF Multiband 6 Bluetooth 200M Men's WatchCasio G Shock GW B5600BC 1BJF Multiband 6 Bluetooth 200M Men's Watch Influenced by the distinctive square design of the 5000 5600 Series, the real difference of the watch lies inside the case and in its movement. It creates its own energy to run from any light available and maintains time through a radio controlled timekeeping arrangement. Designed for outstanding performance both for urban and outdoor use, it also connects to your smart phone.