Rated working voltage: 12VLimit working voltage: 9~26VPower consumption: Less than 1WOperating temperature: 0 to 50 degreeSNR: More than 60dBDistortion: Less than 0.1%Frequency respone: 20Hz - 15KHzLeft and right channel separation: More than 60dBFM transmission frequency: 87.5 ~ 108MhzPackage content:1 x Car FM Transmitter(black color)1 x Audio cable1x IR remote control