It has features such as calling function which enables you receive a call and disconnect it, you can also send and receive messages through it but only supported to android Phones for which you need to download app Lefun Health App
M3 water proof Smart fitness Band with Bluetooth or Heart Rate sensor,Activity Records, Sleep Monitor, Calore Burned, Rejected Calling, Alarm, Blood Pressure, Message, Usb Charging Supports smart phones, Tablets and PC's and also support Android and IOS
Compatibility: Requires Android 4.3 or above, iOS 7.1 or above, Bluetooth 4.0 or above, download APP "Lefun Health App" from Apple Store or Google Play
Waterproof level: IP67, Industry's Best. Charge the device fully before first use
Designed with multi sport modes, real time heart rate monitor
Waterproof Smart Band: 5ATM Waterproof Rating, Fitness Band can work well 50m under water, which can fulfill all your daily routines, whether you are surfing, swimming or running in the rain Real-time Sports
Data Activity Tracker: With newly added sports secondary screen function, Sports data is visible in real time, Whether you are running, riding, walking, you can always know your heart rate, speed, etc; Heart rate sensor accurately reads 24-hour heart rate changes.