Function： Our FM transmitter can be connected to any kinds of audio devices to transmit high-quality music from MP3, CD player, MD, portable computer and palmtop to any FM radio system. Characteristics ： ? Chinese Design Patent, All Rights Reserved. . ? Transmit by FM stereo. ? Allow the user to change the frequency within the range from 87.5 MHz to 108.0 MHz in steps of 0.1 MHz. ? LCD eight-section codes demonstration. （ -20 °C - 60 °C ） ? Blue background light lasted for 30 seconds. ? Stored memory of 10 user-defined frequencies. ? Auto power off after 3 minutes on condition of none-input of frequency signal. ? Auto power on on condition of input of frequency signal. ? Plugs into the cigarette lighter (12V) without additional power supplies. ? Blue LED power display. ? All the frequencies in storage can be kept for 3 years under power-off condition ? Hold a fast frequency modulation as modulating 20 frequency points per second