Detailed Product Description Bluetooth Headset ,the world's first clip-on, calling up reminder -Appliant to Version 2.0-Transmitter Power: Class 2-Operation Distance: Within 10m-Embedded rechargable Li-batteries:300mAh-Charger output Spec.: 5.0V(300mA)-Normal charging time: 1~2 hrs-Calling time: 4 hrs-Music Time: 6 hrs-Standby time: 110hrs-Headset Size: 47*17.5*28mm-Weight: 10.8 g