Casio G-Shock Solar Atomic Mobile Bluetooth GW-B5600BC Watch GWB5600BC-1B,GW-B5600BC, I think it's one of the most complete and affordable of the squares. The bracelet is very comfortable, it's solar, radio controlled and Bluetooth. The display is quite readable even if,G-Shock GW-B5600BC-1JF Squares Bluetooth,GWB5600CD1A2 | G-SHOCK 5600 SERIES Black | CASIO