Features:1. This music receiver (hands-free) is designed to receive music from mobile phones or transmitters that feature bluetooth wireless technology.2. This music receiver can be used with almost any audio receiver with an audio input jack， including automoblies.3. Listen to music from your smart phone or MP3 player on your existing home or car audio system.4. To enjoy car music， call solutions， the use of smart phones to make calls and listen to music through the car stereo.5. This product is embedded echo cancellation microphone.6. Using only one button， you can easily switch between music and phone.Specifications:1. Blutooth standard: Blutooth V3.0+EDR， Class 22. Transmission distance: 10m3. Hands-free4. Stereo audio profile: A2DP5. 3.5mm stereo audio output6. Sleep mode for energy saving7. One touch connect button for easy device pairing8. Use with home stereos/ speakers. car stereos， headphones etc.9. Power supply: Chargers via mini-USB cable10. Operation time: up to 8 hours