Screen: 0.66 'OLED</br>Function: Call ReminderHeart Rate monitoringSleep monitoringMovement StepSwimming Waterproof and so on.</br>Language: Chinese traditional Chinese English Russian Spanish Japanese French Ukraine Italian and German</br>System requirements: Android 4.4 and aboveIOS 7 and abovephone supports for Bluetooth 4.0.</br>Charge:Li ion battery: 60mAH working time: 10-15 days (standby time is longer) USB charger 45 minutes can be filled with electricity (please use 5V 1A charger)</br></br>Product Description</br></br><p ><strong>How to wear</strong><strong> </strong><br /> Best to wear the band after unlar styloid and to adjust via Adjustment Hole.Sensor should be close to skin avoiding moving. </p> <p ><strong>Install SmartBee APP on Phone</strong><strong> </strong></p> <p >Scan the following QR code or enter the application market to download and install SmartBee. <br /> System requirements: <br /> Android 4.4 and aboveIOS 7 and abovephone supports for Bluetooth 4.0. </p> <p ><strong>Other Features</strong><strong> </strong></p> <p >More APP Notifications <br /> Add more APP notifications in Settings.??which support partial model only. </p>