1. Screen: 1.69 inches, Resolution: 240 x 280 2. System support: Android 5.1 and above, IOS 8.2 and above, support Bluetooth 4.0 3. Material: metal + plastic 4. Standby time: normal use: 3-5 days; standby: 10-15 days 5. Charging method: Magnetic suction 6. Bluetooth version: BLE5.0 7. Battery capacity: 180mAh 8. Waterproof level: IP67 9. Message notification: Bluetooth call, heart rate monitoring, blood pressure/blood oxygen measurement, sleep monitoring, information notification of various sports modes.
