Full-metal construction  Solar powered Battery level indicator Wireless linking using Bluetooth Auto time adjustment Easy watch setting Approximately 300 world time cities Time & place Reminder Phone finder Button operation tone on/off Stainless steel band One-touch 3-fold clasp Shock resistant 200-meter water resistance 49.8 × 44.4 × 12.8 mm   Style: gmb2100bd-1a Color: Black Material: Stainless steel