Parameter: Display type: 1.39-inch pure circular colorful display Touch screen: full touch Resolution: 360*360 pixels Waterproof: IP67 Battery capacity: 260mAh Bluetooth: BLE 5.0 Call Bluetooth: BLE 3.0 Support mobile phone system: Android 4.4 and above, IOS8.4 and above Function: Answer/reject calls/make calls, heart rate monitoring, blood pressure/blood oxygen monitoring/sleep monitoring, sedentary reminder, exercise step counting, calorie consumption, track record, exercise time, incoming call reminder and display, message push and display, remote camera , automatic heart rate measurement, multi-sport measurement, clock reminder, alarm clock reminder language: APP language: Chinese, Traditional Chinese, English, Korean, German, Spanish, Japanese, French, Italian, Russian, Portuguese, Arabic, Ukrainian Watch language: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian After receiving the watch, please charge it first. Due to long-term logistics, the watch has a low battery. Before use, scan the QR code on the instruction manual to download the app and connect to the watch through the app.