GX08 1.69 Inch Square Screen Smart Watch Supports Heart Rate Detection, Blood Pressure Detection, Blood Oxygen Detection1. Screen: 1.69 inches, Resolution: 240 x 2802. System support: Android 5.1 and above, IOS 8.2 and above, support Bluetooth 4.03. Material: metal + plastic4. Standby time: normal use: 3-5 days; standby: 10-15 days5. Charging method: Magnetic suction6. Bluetooth version: BLE5.07. Battery capacity: 180mAh8. Waterproof level: IP679. Message notification: Bluetooth call, heart rate monitoring, blood pressureblood oxygen measurement, sleep monitoring, information notification of various sports modes.