Hardware1. Dispaly: 1.39 inch AMOLED full round touch screen, 454*454px2. CPU: UNISOC SL8541E Cortex-A53 quad core, 1.3GHz; GPU:Mali-T820 MP1@384MHz3. RAM: 4GB RAM4. ROM: 64GB ROM, not support TF card extension5. Camera: Single 2MP side camera6. Battery: Built-in 650mAh battery, support magnetic charging7. Sensors: G-Sensor, heart rate sensor, air pressure sensorNetwork & connectivity1. 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/B412. WiFi: IEEE802.11 b/g/n/ac, support 2.4GHz/5GHz dual-band WiFi3. BT: V4.14. Video calling: Support5. GNSS: Support A-GPS/GPS/GLONASS/BDSOther features1. Sync with smartphones: Support Android 6.0 or iOS 11 above. APP message push / anti-lost / remote camera2. Health management: Heart rate monitor, pedometer, sleep detection, blood pressure detection3. Outdoor tools: Multi sport modes, barometer, full time display