The device is specially designed for reading files stored in flash drive (*.mp3) by USB host and wirelessly playing in a car. Drivers can enjoy their favorite MP3 music only with USB flash drive while driving .It can transmit the MP3 music to the car radio speaker in FM stereo. The device can provide you with high quality music with it's digital technology. Features 1. Using Car Cigarette Lighter(12V DC) . No other power sources required 2. No Cumbersome Wires or Cables . It has FM module integrated within itself . The MP3 music will play through any car stereo system 3. Easy to set and easy to use . Find an unused channel from 87.7 to 88.9 . Set dial on this item same channel(87.7 to 88.9) . Press the play button and the music will play through your car stereo system 4. It accepts most USB 1.1 or 2.0 USB Flash Drive . Plays MP3 Files stored in your USB Flash Drive USB Host Control Interface reads most Pen Drive. .Integrated MP3 Decoder reads MP3 files stored in Pen Drive . .Built in FM StereoTransmitter module broadcasts the MP3 music for the FM Car Radio to receive. Specifications .Compatible with most USB1.1/2.0 mass storage devices. .Decoder supports MP3 music files. .FM Channel Preset:7 Channels. FM 87.7 87.9 88.1 88.3 88.5 88.7 88.9 MHz .Transmission range:15 meters .DC-12V operating with Automobile cigar-lighter. .Dimensions:90X38X22mm(L.W.H) Easily to install and play Your Music(How to use FM-08) 1. Find an unused station on the radio from 87.7 to 88.9. 2. Rotate the wheel switch to match that unused frequency station. 3. Plug it into Cigarette Lighter. 4. Plug The Pen Drive into it. 5. Press the Button Start/Pause. The fancy Music will com out from your Stereo System.