CY-862 5-Channels Wireless FM Transmitter with Car Charger Function introduction support wide FM wave range(below two types frequency channel selectable) A.88.1 88.3 88.5 88.7 88.9MHz B.107.1 107.3 107.5 107.7 107.9MHz 1.Flexible manual channel setup available, the smallest frequency channel is to 0.1MHz 2.Signal transmission range: 10M, 3.5 LED display.. 4.DC 12V power connector How to use the Wireless FM Transmitter? Plug in the 3.5mm headphone connector of the FM Transmitter into the headphone jack of your MP3 player or any audio source including your PDA, CD player, Cassette player, PC, Laptop Computer, etc. Tune your car audio or receiver to the clearest FM frequency (FM 88.1 / 88.3 / 88.5 / 88.7 / 88.9 MHz) and enjoy your digital music with full sound and convenience.