1. 2In1 of transmitting and receiving. This music receiver can upgrade all audio devices to Bluetooth ones.2. Long-distance Hi-fun transmission with stable signal. The inbuilt gold-plated antenna guarantee strong signal and stable transmission.3. It is compatible with ordinary phones、 smart phones、 iPone、 iPad、 and laptop、 etc..4. It is equipped with an inbuilt microphone which is used to remove the echoing sound. You can changebetween music and phone call easily with only one key.5. The longest transmission distance can reach 10 meters and is can be used as long as 8 hours after fully charged.