1Square screen smart bracelet: 1.3 inch IPS high-definition color screen. 224-hour continuous heart rate test, blood pressure detection. 3Time/clock display, step, calories, distance, sleep, photo, Startup & Shutdown display. 4Mutual checking of measurement data: You can check the movement of your relatives and friends. 5Call reminder, SMS reminder, for QQ reminder, for WeChat reminder, for LinkedIn, for Skype, for facebook, for Twitter, for Viber, for Line, for whatsApp reminder.Features:Square screen smart bracelet: 1.3 inch IPS high-definition color screen. 24-hour continuous heart rate test, blood pressure detection. Time/clock display, step, calories, distance, sleep, photo, Startup & Shutdowndisplay. Mutual checking of measurement data: You can check the movement of your relatives and friends. Call reminder, SMS reminder, for QQ reminder, for WeChat reminder, for LinkedIn, for Skype, for facebook, for Twitter, for Viber, for Line, for whatsApp reminder.Specification:Model: N99 Weight: approx. 48g Size: approx. 4.2x3.5x1cm/ 1.7*1.4*0.4 inch Square screen smart bracelet: 1.3 inch IPS high-definition color screen Supported languages: Chinese (Simplified, Traditional), Japanese, English, French, German, Italian, Spanish, Russian, Portuguese, Polish, Malay For Android / Apple app sync: For WearHealth System requirements: For Android 4.4 and above, For IOS 8.0 or above, support for Bluetooth 4.0 Bluetooth version: BLE 4.0 Main control chip: NRF52832 PPG chip: HRS 3300 Battery capacity: 170mAh Motor: built-in, vibration reminder Waterproof rating: IP68 Sensor: three-axis gravity sensor Color:Black / Rose Golden (Optional)Functions:24-hour continuous heart rate test, blood pressure detection Time/clock display, step, calories, distance, sleep, photo, Startup & Shutdowndisplay Multi-sports mode (running, walking, cycling, climbing, basketball, football, badminton, table tennis) Sleep monitoring (sleep time, sleep quality) Call reminder, SMS reminder, for QQ reminder, forWeChat reminder, forLinkedIn, forSkype, forfacebook,