Full function remote controlled Draw power the cigar socket in the car (Car 12V/24V DC power) Adopted frequency phase lock loop technology and 3D sound coding technology Read and transmit MP3/WMA/.asf music files on the USB removable disk directly or any other external audio device over car FM tuner USB charging mode Functional Keys: Play/Pause, Prev./V-, Next/V+ and Channel. Play the last frequency and track number when it restart LED Display to show ed FM frequency Full FM frequency (216 frequencies) available(87.5-108MHz, 0.1MHz/Forward Step) Specialty desgin for remote control buttons function: Next/Previous to adjust FM Frequency with 1.0MHz/Step, Volume +/- to adjust FM Frequency with 0.1MHz/Forward Step