An light weight fitness tracker with 0.69 inch OLED Screen display?? Exclusive touch key?? TPU material?? Find phone?? IP65 dustproof and waterproof?? not afraid of washing hands/ doing housework/ walking under rain.</br>HEART R"NITOR BRACELET -- Monitoring of heart rate Real-time monitoring and recording?? scientific planning exercise?? Automatic sleep monitoring analyzes your sleep quality.Monitor your activity levels?? track walking distance and calculate calories burned.?Achieve the daily exercise targets you set and with the app to analyze your fitness and sleep activities to help you improve your lifestyle.</br>ALL IN 1 WRISTBAND -- Call notifiction?? Message/ QQ/ Twitter reminder?? Standard Sports function(steps/ distance/ calories)?? Time display?? Sleep detect?? Shake photograph?? Anti-lost reminder (phone out of range alerts )?? Smart alarm clock?? Smart unlock?? Sports information sharing?? Smart vibration alarm.</br>WIDELY COMPATIBILITY -- Android smart phones with Bluetooth 4.0 and Android 4.4 or above system. iOS 7.0 and above system?? iPhone 4S/5/5C/5S/6/6 Plus 6S/6S Plus?? iPad?? iPod touch etc. NOTE: This smart band is featured by Low-Energy Bluetooth Technology" can NOT directly connect it from your phone's bluetooth?? but you can link and pair it inside your app.</br>BEST GIFT FOR YOUR FRIENDS -- Soft adjustable wrist band design which compatible for all ages. This heart rate monitor included: 1 host + 1 wrist strap + 1 x charger + 1 x user manual</br></br>Product Description</br></br><b>Specification:</b><br> ??Product Type:Smart heart bracelet<br> ??Color: Black?? Blue?? Yellow??Pink<br> ??Main body weight:4.2g<br> ??Battery Type: Lithium-polymer batteries<br> ??Battery Capacity: 45mAh<br> ??Bluetooth: BT4.0LE<br> ??Waterproof Grade: IP65<br> ??Display: 0.69''OLED<br> ??Standby Time: 10-15 days<br> ??Working temperature:-20??-50??<br> ??Band length:about 225m<br> ??Strap Material: TPU<br> ??Bowl Material: Aluminum<br> ??Screen Material: capacitance touch-screen<br> ??Compatible mobile operating system: Bluetooth 4.0; Android 4.4 and above or iOS 7.0 and above (iphone4s above)<br> <br> <b>Package List:</b><br> ??1 x chip host<br> ??1