Product description<br />Color:Black<br />Heart rate monitor:24 hours real time dynamic heart rate monitor｣ｬ plan appropriate physical exercises. <br />Activities tracking:Record daily steps｣ｬ distance and calories consumption. <br />Sleep monitor&Alarm:Automatically track your sleep quality｣ｬ and alarm silent vibration will wake you up.<br />Call alert:Caller name and caller ID will be displayed on OLED screen. <br />Long standby:Standby time 7-10 days/4 days operating time. <br />SNS notifications:Support SMS｣ｬ WhatsApp｣ｬ Facebook｣ｬ Twitter｣ｬ Wechat｣ｬ and other social network site alert. <br />Anti-lost:When your phone or the bracelet is beyond the range of Bluetooth(6M-10M)｣ｬ the device will vibrate to notify.<br />Find phone:Long press the key to enter find phone interface｣ｬ then double click the key｣ｬ smart phone will vibrate or ring.<br />Basic Specifications:<br />CPU and Mainboard:Nrf51822 MPU6500 Megachips PAH8001EI<br />Compatibility:For IOS8.0 + & Android 4.4 +<br />Bluetooth:4.0 wireless sync to IOS and Android Product<br />Strap Material:Leather<br />Battery type:Polymer lithium battery<br />Battery Capacity: 80mAh<br />Standby:7~10 days<br />Charging duration:1h<br />Host Weight:25g