Bluetooth 4.0 APT-X Audio Wireless Music Receiver A2DP for iOS iPhone Android Tablets & more Compatible with any Bluetooth smartphone, iPhone, iPad, Android or PC for high quality wireless music and calling. Routes phone Calls and music through your car's stereo system via the Aux/MP3 input. Uses bluetooth 4.0 technology and the APTX audio decoder for superior music performance and clear voice technology for noise reduction.