1. Heart Rate Monitor 2. Sedentary Reminder 3. Calories 4. Time 5.alarm 6. Anti-lost 7. Distance Calculation 8.Step Monitor 9. Call Alert 10. Wrist Sense Pre-requisites for use: Your mobile phone Bluetooth version must be Bluetooth 4.0 or higher, iOS version must be iOS 7.1 or higher, Android version must be Android 4.3 or higher. doing work: To connect the smart band with the mobile phone, you need to connect the existing mobile successfully via Bluetooth. Click on the unbind icon and the band has been successfully connected to the device. Specifications HR Sensor: Weight: 7g Battery Type: Rechargeable Li Battery Battery Capacity: 40mAh. note: To charge this fitness band you just need to connect it to the charger the charging will start automatically. Data sync: Bluetooth 4.0 Working temperature: -10c to 50c Waterproof: Not for swimming or diving Standby time: 15 days and above This product uses professional Bluetooth RF signal and custom algorithm, accuracy reach 100%