1.9" HD IPS display with 240 x 283 resolution; sport, fitness tracker, default, and other modes. Features include heart rate, sleep monitor, Bluetooth call, SOS for assistance, notification sync, and many more. IP68 Water Resistance (30 minutes at 1.5 m depth). Alloy Zinc Watchcase. Memory: 128MB of ROM and 192KB of RAM. Wireless charging is the mode of charging. 420 mAh battery. Version 5.0 of the wireless connection. It takes two hours to charge. Wait time: a maximum of seven days.