Features: Monitors heart rate, blood pressure and sleep to let you know your health better. Tracks sports activities like steps, distance, and calories burned. BT4.0 connection, suitable for Android 4.4 or above, for iOS 8.0 or above. Check daily, weekly, monthly, and yearly data to see progress on App. Incoming calls, messages and app vibration notifications. Other functions: IP68 waterproof, find phone, sedentary reminder, etc. Easy to charge from USB-port device. Lightweight and adjustable, perfect gift for both men, women, kids. Note: The heart rate and blood pressure monitored are for reference only, not for medical purpose.