Summary: Now you can use your MP3 to listen to your favorite tunes through any FM stereo receiver. Songbird FM Transmitter wirelessly connects portable music players to your car or home stereo quickly and easily. Just plug the FM Transmitter into the headphone jack of your MP3 or any audio source including your PDA, CD, or cassette player; or connect it to your PC or laptop computer. Tune your car stereo or receiver to the clearest FM frequency, and enjoy your digital music with full sound conveniently. Application 1. Auto car FM system, that can play MP3, CD, PDA, Person Computer, CAR-TV, CAR navigation and etc. 2. Home wireless music system, that can reduce the difficulty to layout the wire or for any place that local in different place 3. Security listening 4. Baby look Feather: 1. Rohm chip BH1417F inside 2. Frequency:87.7 88.1 88.5 88.7 / 106.7 107.1 107.5 107.9Mhz 3. Preset 4 channels, max channel are up to 14(settted by manufactory) 4. Power light and frequency LED indicated 5. Audio Frequency Range: 50Hz to 15KHz 6. High-clarity, full-stereo sound 7. Operating Range: 10-30 m 8. Channel Isolation Ration >=45DB 9. Dual power model(Battery and Dc power supply) 10. Recharge circuit built-in