Description:<br>  <br>               Model               Huawei TalkBand B2                    Matching system               Android 4.0+\/IOS 7.0+                   RAM               96KB                   ROM               16Mb Flash (Bluetooth) 512KB Flash(Microprocessor)                   Screen size               0.73Inch 128x88                   Function               Bluetooth headset\/Motion record\/Sleep monitoring\/Sedentary remind and goal setting\/Real-time data to App， etc.                   Battery capacity               90Mah                   Bluetooth               Bluetooth 3.0                   Working time               About 5 days(Depending on wireless call usage time)                   Talking time               About 6 Hours                   Standby time               About 12days(Bluetooth connection off)                   Charging time               Less than 1.5hours                   Button               Single button control， touch screen                   Interface               Standard USB Charging                    Sensor               Leading 6-axis motion sensor (Accelerating sensor+Gyroscope)                   IP57               Dustproof and waterproof                   Microphone               Dual Mic reduction                   Weight               0.4kg                   Dimensions               205mm&amp;times;20.6mm&amp;times;11.9mm                   Package Contents               1 x Huawei Talk Band B2 Smart Watch         1 x User Manual ( Chinese )