1) High fidelity and full frequency,stereo,digital PLL. 2) LCD display with blue background lighting. 3) 200 selectable channels(88.1MHZ~107.9MHz/Step). 4) Multi-memorial channels,individual design to meet different requirements. 5) Small electric current,power supply by ipod, no need extra power supply. 6) Compatible: all ipod Models. 7) Charger ipod through the device by charger. Operating Instructions: 1) Turn on ipod player,plug the FM transmitter into the connector port of ipod. 2) Adjust the volume and frequency of the FM radio (avoid the transmission channel of the broadcasting stations). 3) Press + increase 0.1MHz frequency, key decrease 0.1MHz frequency. 4) Choose the best frequency,then choose 1 2 3 key and press set the frequency of the FM transmitter and the FM tuner to some other frequency). 5) Directly supply power for ipod,connect charger into the bottom of the device.