UNIWA DM300 4G Android Watch Phone, 1.43 inc Unisoc SL8541E Quad Core, Support Heart Rate Blood Oxygen 1. Model No.: UNIWA DM300 2. Operating System: Android 8.1 3. Processor:Unisoc SL8541E Cortex-A53 quad core, 1.4GHz; GPU: Mali-T820 MP1 680MHz 4. RAM+ ROM: 2GB or 4GB RAM + 16GB or 64GB ROM 5. Screen: 1.43 inch G+F AMOLED round touch screen, 466 x 466px 6. Camera: 2MP side camera 8. Battery: Built-in 800mAh polymer battery, support magnetic charging 9. Sensor: HX3918 heart rate sensor, pedometer 10. Languages: Multi-language 11. Keys: Power button, back button 12. Material: Plastic+PU strap 13. Dimension: Diameter 50.5 x Thickness 13.7mm, strap: width: 22x 265mm 14. Weight: 63g (include battery) 15. Waterproof Level: 1 ATM Network & Connectivity: 1. 4G: FDD-LTE: B1B3B7B8B20; TDD-LTE: B34B38B39B40B41 2. WiFi: IEEE802.11 bgn 4. BT: V4.2(BLE) 5. GNSS: A-GPS, GPS, GLONASS IO Interfaces: 1. Magnetic Charging Port(4pin) x 1 2. Nano SIM slot x 1 Other Functions: 1. Video Calling: Support 2. Health management: Support multi-sport modes; support heart rate, blood oxygen monitoring Standard Package List: 1. Watch Phone x 1 2. Magnetic Charging Cable x 1 3. User Manual x 1