Fashionable NEW 100 Channel Wireless FM Transmitter for mp3 player, IPod, CD VCD DVD player Install 2 AAA Batteries in the battery compartment of the unit. Plug one end of the connection cable to the FM Transmitter Jack, MD/CD/VCD/DVD Player. Specification: Operation range 20 Meters; Power Output 0 - 300 mw; Power Source 2 AAA Batteries; Sound Stereo Sound, Digital Stereo Encoder Completely Built-inStereo Separation;Stereo Separation 72 dB;Frequency Range 20 -15000 Hz; Frequency Control Dual Speed hase Locked Loop (PLL); FM Channel Range 87 - 97 MHz with increment of 0.1 Tune your car stereo or receiver to the clearest FM frequency from 87-97 Mhz; Press and hold (+) for two seconds to turn on the unit Press (+) or (-) to select the cannel same on the radio; Enjoy the beautiful digital music with full stereo song; Press and hold (-) for two seconds to Turn off the unit.