High-end smart watches that are fashionable and waterproof up to IP68 level (1.5 m deep water for 30 minutes). 1.9" HD IPS. sport modes, etc. Features include heart rate, sleep monitor, Bluetooth call, SOS for assistance, notification sync, and many more. GB4943.1-2011 and GB/T22450.1-2008 are the standards. Watchcase: alloy of zinc. Display: full-round, 1.9" IPS, 240 x 283 screen. Memory: 128MB + 192KB. Wireless charging is the mode of charging. 420 mAh battery. Versions of the wireless connection: 3.0+5.0. IP68 is the waterproof level. It takes two hours to charge. Wait time: seven days.