The product is wireless FM Transmitter,you can modulate any audio in your portable device such as iPod, PDA,MP3, CD player. ,with 3.5mm jack of this transmitter to a FM signal and your FM receiver in your car receive the FM Signal and Play it.
Blue LCD display with back-light,include frequency,temperature,real time and dynamic transmit icon..
Transmits on FM channels 87.5MHz~108MHz(interval 0.1MHz), Full range stereo FM transmitter with step of 0.1MHz.
Frequency response: 20Hz to 20kHz
Power by 2x AAA batteries OR the car`s power source