Product Information: In this new version, the imosi S28 Smartwatch features a brand new 1.09 inch color display. > Sport: All-day activity tracking, IPX7 waterproof, 24 training modes, stopwatch, sports data report. > Health: 24/7 heart rate, blood pressure, blood oxygen, sleep tracking and phases, reminders to exercise, > Life: smartphone notifications, alarm clock, weather, shutter, control music, > Mobile phone system support: Android 4.4 and above, iOS 9.0 and above, Bluetooth support. Product Parameters: Model: S28 Size: 245(L)*43(W)12mm(H) Main Control Chip: 8762C Chip Platform: Realtek Main Frequency: 40MHz Architecture: RAM Number of Cores: Single Core Motherboard Memory: 160KB RAM Falsh: 128MB Auxiliary chip: G-sensor Charging method: magnetic charging cable Charging specifications: 5V/500MAH Waterproof rating: IP67 Bluetooth: Bluetooth 5.0 BLE Display: 1.09 inch IPS color screen, 240240 Battery: 180mAH polymer lithium ion Charging time: about 2H Motor: Cylinder motor Heart