Bluetooth 5.0 connectivity, stable signals and low power consumption With the large color screen of 1.7 inches, with IP68 water resistance level, the watch is sweat-proof and durable for use Health monitoring: heart rate measurement, blood pressure or blood oxygen measurement and sleep monitoring, etc Never missing messages and phone calls, it can save massage records, like Facebook, Twitter, Instagram, LinkedIn, etc With built-in 200mAh battery, standby time of up to 21 days Widely compatible with Android 4.4 or above and iOS 9.0 or above smartphones Great for old people, boys, girls, suitable for most people who need to monitor the health condition Specification: Bluetooth version: 5.0 BLE Waterproof class: IP68 Compatible system: for Android 4.4 and above, for iOS 9.0 and above APP: Gloryfit Health Monitoring: Dynamic and static heart rate, blood pressure, blood oxygen, sleep monitoring, step count, calorie consumption, distance, sedentary reminder Other functions: incoming calls and SMS reminder, time, silent alarm clock, weather show, camera control, stopwatch, custom dial, multiple motion model, custom brightness adjustment Operation temperature: -10℃ - 50℃ Screen: 1.7 inch IPS Battery capacity: 200mAh Chip: RTL8762CK Blood pressure heart rate sensor: VC11 Three-axis sensor: STK8321 Shell: GlassandABSandZinc alloy Information Push Languages: Simplified Chinese, Traditional Chinese, English, French, Japanese, German, Italian, Portuguese, Spanish, Arabic, Russian APP Languages: Simplified Chinese, Traditional Chinese, English, French, Japanese, German, Italian, Portuguese, Spanish, Arabic, Russian, Korean, Indonesian