this FM Transmitter Remote Control for Apple iPods and iPhone which doesn't need extra power supply is compatiable with all iPod and iPhone series, but power charger does NOT work with iPhone 3G.

FM Transmitter Remote Control for Apple iPods and iPhone

Features
·Compatible with iPhone and all iPod Models (charger is NOT compatible with iPhone 3G).
·High fidelity and full frequency, stereo, digital PLL
·LCD display with blue background lighting
·200 selectable channels (88.1MHz ~ 107.9MHz. 0.1MHz/Step)
·Multi-memorial channels (individual design to meet different requirements)
·Small electric current, power supply by iPod, no need extra power supply
·Charger iPod through the device by charger

Easy set up guide
·Turn on iPod player; plug the FM transmitter into connector port iPod
·Adjust the volume and frequency of the FM radio (avoid the transmission channel of the broadcasting stations).
·Press"+" increase 0.1MHz frequency,"-" key decrease 0.1MHz frequency
·Choose the best frequency, the choose"1" "2" "3" key and press for 5 seconds to keep it in your memory group. (if the signal is interrupted, please set the frequency of the FM transmitter and the FM tuner to some other frequency)

Directly supply power for iPod and iPhone, connect charger into the bottom of the device Please Note: FM transmitter is compatible with all iPod and iPhone series, But power charger does NOT work with iPhone 3G.

Package Contents
·Wireless FM Transmitter
·Car charger Cable
·Remote Control