The transmitter can be set to broadcast iPhone or iPod's music to any FM frequency from 88.1 to 107.9. Its backlit screen shows which frequency is currently broadcasting - and can easily be adjusted via buttons located directly on the front of the unit or with the wireless remote control.

Features:
Play, charge and cradle your iPhone 3G / iPod with one simple, secure device
Two Dimensional Tuning Technology (TDTT) – scans radio frequency quicker and more accurately, rapidly switches from coarse tuning to fine tuning
Wireless remote controller
Transmits music to your car's FM stereo
Uses any available FM frequency from 87.5 to 108.0
LCD Digital Display on FM Transmitter
Charges iPhone 3G / iPod while securely cradled
No install necessary - simply plugs into any available auto power outlet
10 Presets so you can jump to commonly used frequencies
Aux-Input lets you connect and transmit iPod shuffle and any other MP3 player, laptop or game system over your car stereo
Specifications:

Input Interface: Apple iPhone / iPod Dock Connector or 3.5mm min stereo plug
Modulation: FM Stereo
Frequency response: 20Hz to 20KHz
Input voltage: 12 VDC
Compatible with Apple iPhone, iPhone 3G, iPhone 3G S, all iPod (Touch, Classic, Nano, Video, Photo, iPod with color display, Mini, Shuffle), Microsoft Zune and most MP3/CD/MD Player with 3.5mm headphone jack.
Color: Black
Apple iPhone / iPod not included
Package Content:

FM Transmitter
Wireless Remote Control
3.5mm Mini Stereo AUX Input Cable