Other important functions:Call and SMS Alert: View caller ID and SMS on the smart band screen when your friends contact you.Sedentary Alert: Set reminders for periods of time of inactivity.Alarm Alert: Set silent alarms on the smart band to wake you up and not disturb your partner.Sleep monitoring automatically: At night, it tracks your sleep cycle, helps you learn how to sleep better, and wakes you silently in the morning.Multiple themes change: 4 themes switch by heart.Compatibility: Muzili fitness armband can compatible with IOS 7.0 & above Android 4.4 & above and Support Bluetooth 4.0. Download and install the free APP “VeryFitPro” from the Apple Store or Android APP Store.Connect this smart band with the app in your smart phone via Bluetooth, data will be transmitted to the App.Basic parameterScreen size: 0.96 inchScreen type: OLED screenStrap Material: TPEWith charging indicator: RedWeight: 30gSize: 240*16*10cm. Suitable for wrist size: 5.4 inches – 7.6 inchesBattery capacity: 45mAhEndurance time: 8-10 daysVibration: real time mute vibration alertWaterproof and dustproof: IP67. The highest level of dust-proof and short soak protectionQ:Is the bracelet waterproof?A:It is waterproof. Our bracelet is IP67 waterproof rating. Support for short soaking protection. But for the service life of bracelets, we recommend you not to soak in water for a long time.Q：How to connect the cell phone with fitness tracker?A: 1. Download its own app named VeryFitPro from app store or google play, it requires andriod 4.4 or newer & ios 7.0 or newer os.2. Turn on phone bluetooth, light up the band screen.3. Go to the App – Device, drag down to Bind Device, then search and pair the device with your phone.