Features:.Compact， Ultra mini design， light weigth， popular and easy to carry..Rechargeable， long battery life， fast charging..High-fidelity sound quality， enjoy high quality songs..Voice broadcast when you receive a call..One button to answer call， built-in microphone..Supports two bluetooth devices simultaneously connected..Can be compatible with various bluetooth enabled devices such as Mobile Phones， Tablets， PC and so on.Specifications:Bluetooth Version: V4.0+EDRPower Level: Class IIWireless Frequency: 2.402-2.480GHzTalk Time: about 4 hoursMusic Playing Time: about 3 hoursStandby Time: about 120 hoursEffective Range: 10 metersWeight: about 43g