Fitness Tracker, Heart Rate Monitor Watch ,FIT-FIRE Wireless Smart Activity Heart Rate Monitor Fitness Watch with OLED Display (Purple)

Compatibility:For IOS7.1 and above & Android 4.4 and above,only use for smart phoneApp download:Download APP 'Veryfit For Heartrate' from Apple Store or Google Play or scanning the QR codeTips for Android user: Don't worry about pairing device in your Bluetooth of cellphone,you just need open the app and have your Bluetooth on,then go in the [...]