FM Transmitter+Car Charger for iPhone 4 3GS iPod 100% brand new High fidelity and full frequency, stereo, digital PLL. wave signal transmission and reception will not be affected even in the situation subject to extreme changes by temperature Small power requirements. Powered by iPod/iPhone directly,No extra power required Charge your iPod/iPhone through the car charger LCD Display with blue background lighting Transmits on FM channels 88MHz~108MHz, 200 selectable channels ,Up/Down Frequency Scan buttons Operating Instructions: 1. Connect Transmitter to iPhone/iPod 2. Press on +/- button to your desired frequency, then adjust your tune radio to the same frequency. 3. Plug car charger into cigarette adaptor, and connect car charger to FM Transmitter to charge iPhone, iPod Note: if the FM signal is interrupted, please set the frequency of the FM transmitter and the FM tuner to another frequency. Items Included in the Package: 1 x FM Transmitter 1 x Car Plug Charger Compatible With: iPhone 2G 4GB / 8GB / 16GB iPhone 3G 8GB / 16GB iPhone 3GS 16GB / 32GB iPhone 4 16GB / 32GB iPod Classic / 3rd Gen / 4th Gen iPod Video 60GB, 30GB, 80GB, U2 Special Edition iPod Mini / Nano / Touch / Touch 2nd Gen All models of Apple iPod models with 30 pin connector