Features: 100% Brand New and High Quality.Wireless enjoy stereo music playing. . Convenient Music and Call Control.Light Weight， Comfortable for Sports.Buletooth 1.2/2.0， wireless transmitter standard of class IIFrequency Coverage: 2.402~2.480GHz ISM bandSensitivity: -80dbmTransmit Range: up to 10mTransmit Speed: 57~723KbpsStereo Compression Ratio: 44.1/ 48kHZChannel: 79 channels of 1MHz， B/WContact Terms: Point-to-PointBattery: Built-in Rechargable Li-ion BatteryCharge Power : PC USB， 5VCharging Time: 1-2 hoursStand By Time: 4 daysWorking Time: 3-4 hoursCharge Power : PC USB， 5VCompatible with cellphones such as iPhone， Nokia， HTC， Samsung， LG， Moto， PC， iPad， PSP and so on enabled Bluetooth. includes 1 x Bluetooth Headset1 x USB Cable