BH11 4G LTE Android 8.1 Smart Watch, 2GB+16GB, Unisoc 8541 Quad Core, Support Heart Rate Blood Oxygen Features: 1. Unisoc 8541, Android 8.1 2. Support BT calls, one-click connection, more convenient call scenes; 3. Cool UI, support drag operation + quick center function; 4. DDR3 2GB (RAM) + 16GB (ROM) large memory, built-in six dials + three menu modes, rich UI scenes; 6. 1.508-inch large screen, AMOLED high-definition resolution; 466*466 7. Heart rate Goodix HX3918 8. IP67 deep waterproof, suitable for wearing in more environments. Hardware Specifications: 1. CPU: Unisoc 8541 Quad core, 1.4G 2. Memory: 2GB+16GB 3. CPU model: Unisoc 8541 4. Frequency band 2G(B2358 3G(B1258) 4G(FDD B123578121720, TDD B3438394041) 5. OS version: Android 8.1 6. GPS: Support 7. WiFi: Only supports 2.4G 8. G- sensor: Support 9. TP: Asahi Glass LENS material, IC packaging process: COF, surface hardness greater than 7H, surface requires evaporation AF, touch IC: Haili Chuang 9217 10. Display: 1.508-inch AMOLED, resolution: 466 x 466 11. Motor: 0720 flat motor, wire welding 12. Camera: 2MP 13. Speaker: 1507, deep waterproof speaker 14. MIC: 4015, deep waterproof 15. Bluetooth: V4.2 16. SIM card: Nano SIM card 17. Heart rate: HX3918 18. Pedometer (G-Sensor): STK8321, accurate pedometer 19. Charging method: 4PIN magnetic cable, spacing 7.6mm 20. Battery: capacity 900mAh, V3.85 high voltage 21. Waterproof level IP67 Functions: 1. Basic software functions: shortcut bar (control center), data (steps, distance, calories), heart rate, blood oxygen, weather, stopwatch, countdown dial switch, music player, video player, settings (language selection, brightness adjustment, screen duration, vibration setting, factory reset, version information), components (function editing), breathing training, do not disturb mode, power saving mode, low power reminder, voice assistant (Xiaodu), call function, common contacts, address book, phone dial, browser, information, QR code, calculat