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