UNIWA KW390 1.39 inch Screen 4G Smart Watch, 2GB+16GB Android 8.1, Support Heart Rate Monitoring / GPS / Alipay

Basic information 1. Operating system: Android 8.1 2. Waterproof level: IP67 3. SIM type: Single Nano SIM card 4. Material: Shell: Zinc alloy, buttons: stainless steel, strip: TPU+PU 5. Size: Case: 57*47*15mm, watchband: 22mm 6. Weight: 67g Hardware 1. Display: 1.39 inch AMOLED full round touch screen, 454*454px 2. CPU: UNISOC SL8541E Cortex-A53 quad core, 1.3GHz; GPU:Mali-T820 MP1@384MHz 3. RAM: 2GB RAM 4. ROM: 16GB ROM, not support TF card extension 5. Camera: Single 2MP side camera 6. Battery: Built-in 650mAh battery, support magnetic charging 7. Sensors: G-Sensor, heart rate sensor, air pressure sensor Network & connectivity 1. Band - 2G: GSM 850/900/1800/1900MHz - 3G: WCDMA 850/900/1700/1900/2100MHz - 4G: FDD-LTE B1/B2/B3/B4/B5/B7/B8/B12/B17/B20, TDD-LTE: B38/B39/B40/B41 2. WiFi: IEEE802.11 b/g/n/ac, support 2.4GHz/5GHz dual-band WiFi 3. BT: V4.1 4. Video calling: Support 5. GNSS: Support A-GPS/GPS/GLONASS/BDS Other features 1. Sync with smartphones: Support Android 6.0 or iOS 11 above. APP message push / anti-lost / remote camera 2. Health management: Heart rate monitor, pedometer, sleep detection, blood pressure detection 3. Outdoor tools: Multi sport modes, barometer, full time display