You can use your iPod, PDA, MP3, CD, cassette player, PC, or laptop to listen to your favorite tunes through any FM stereo receiver. The iBEL FM transmitter wirelessly connects portable music players to your car or home stereo quickly and easily using FM radio waves. What you need to do is just plug the unit into the headphone jack of your iPod, PDA, MP3, CD or cassette player or connect it to your PC or laptop computer; and then tune your car stereo or receiver to any clear FM frequency, and enjoy your iPod music experience with more sound and fewer wires. We add a great convenience feature with our unique auto ON/OFF function. It frees you from having to manually toggle your device ON/OFF switch by simply powering on when an audio signal is detected. If no signal is detected for a period of 60 seconds, your device switches off. This innovation preserves battery life while making your outstanding mobile audio experience simpler to enjoy. This device also features 4 programmable memory slots allowing you to save the clearest station wherever you go. It includes 80cm cable that delivers power when used with the mobile power cord for iPod, so that you can preserve your batteries for times when you are away from an alternate source.