Play music via your mobile phone through your car stereo cassette player or your home cassette player * Enjoy full stereo sound from Mobile Phones using your car"s cassette player * Compatible with all stereo Bluetooth mobile phones or built-in stereo Bluetooth devices like MP3 player etc. * The high capacity rechargeable battery & low power consumption circuit was built to guarantee for long hours of playing time * A very innovative approach to bridging cassette players with today"s advanced Bluetooth devices