Wireless appreciate the play stereo music phone</br>Wireless listen to stereo music?? set aside to answer the call automatically converted</br>Remote control music playback status</br>High sensitivity?? omni-directional microphone design?? clear voice?? no echo</br>The wireless set aside to answer phone calls</br></br>Product Description</br></br>Bluetooth Version: 1.2/V2.1?? wireless transmitter standard of class II Frequency Coverage: 2.402~2.480GHz ISM band Sensitivity: -80dbm Transmit Range: up to 10m Transmit Speed: 57~723Kbps Stereo Compression Ratio: 44.1/48kHz Channel: 79 channels of 1MHz?? B/W Contact Terms: Point-to-Point Battery: Li-ion Charge Power : PC USB?? 5V Charging Time: 1-2 hours Charge Power : PC USB?? 5V Color: Blue</br><br/>http://www.amazon.com/gp/product/B00GJFW1F2