9 in 1 carkit for iphone 4G 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