DENVER BFA-10PINK

Fitnessband with Bluetooth 4.0 function
Track your activity + your sleep, and get it displayed in the free app
Direct USB for charging the fitnessband (full charge takes approximately 30 minutes)
Easy to use, just one button on the fitnessband
Intuitive app for your smartphone (Android & iPhone)
Pair with your smartphone via Bluetooth
Supported devices: Android 4.3 with Bluetooth 4.0 and above, and iPhones/iPads with iOS 7.0 and above
Caller ID display & SMS notification
Pedometer function: Steps, distance & calories calculation
Self-timer, find phone function
Vibration alarm clock function
0.49” OLED display
Built-in lithium ion polymer battery: 40mAh, standby time 3-5 days

If you have an Android phone and cannot find the app, then you can download it here and install it manually:
Apk file for Android