3-in-1 Car Kit for iPod 1: working voltage: dc 12v 2: output the voltage: 1a 3: the sound channel is separated degree: 40db 4: frequency is responded: 20hz-20khz 5: working temperature: -15fpc--50fpc 6: input the interface: special-purpose base interface of ipod 7: output frequency: 88.1/88.3/88.5/88.7mhz 8: sends your tunes from your ipod to play on your car stereo speakers·+chargers your ipod at the same time Neuter, oem