G-Shock men's watch Classic Style collection. Fiber-reinforced Resin case with a diameter of 45 mm and is equipped with a Resin strap. Case dimensions (H x W x D) 42.5 × 46 × 13.8 mm. Inside the case is a Casio movement and the watch is equipped with a Mineral crystal. Weight 51 g. The watch is waterproof to 20ATM. Smartphone connection function. wireless connection via Bluetooth®. Automatic clock adjustment. Easy Watch setting, World time in approximately 300 cities, About the app, Time and location, Find phone.