NECTAK M4 Intelligence Bluetooth Wrist Smartwatch Band with Activity Tracker,  (Black Strap, Size : Free Size)

If you're a fitness freak and love keeping a track of the calories burnt, sleep cycle, and heart rate, and then the NECTAK M4 Smart Band is what you need. This smart band works as a heart rate tracker, fitness watch, and an activity tracker M3 waterproof Smart fitness Band compatible with Bluetooth or Heart Rate Sensor. It is compatible to devices having Bluetooth version 4.0 and below in smartphones, Tablets and PC's and also support Android and IOS Working: To connect the smart band to mobile phone, you need to connect the current mobile successfully via Bluetooth