Lightly used available with G-shock original box set Model Specifications: GBD-200UU-1ER The octagonal case and the strap of the watch are made of black resin. Encasing the dial is a durable hard mineral glass crystal. Amongst the functions featured on the watch are a countdown timer, alarms, LED backlight, a perpetual calendar. The watch also has a step counter and a world timer. Movement Type - Quartz