FM audio transmitter for MP3, Mini Disc, CD Player, iPod and other audio equipment with 3,5 mm phone jack. Cute, clear with stereo sound Frequency channel: 106.7MHZ, 106.9 MHZ, 107.1MHZ, 107.5 MHZ Operation LED Power supply: through the connector in the car SNR: < - 60dB Range of transmission: approx. 30 Meter Dimention: (L) 88mm x (W) 38mm x (H) 30mm Color: black Operation: 1.Connect this transmitter with the audio source (iPod/MD/CD/MP3 player) 2.Choose a frequency from: 106,7 106,9,107,1 or107,5 MHz 3.Turn your radio on and set it according to the frequency of the Transmitter: 106,7 106,9,107,1 or 107,5 MHz 4.Turn the FM transmitter and the MP3 Player on. Package included: 4 channels FM Transmitter