Input voltage: DC 12-18V
Output impedance: 4~8ohm Speaker
For Speakers: 20W~200W
Max power: 2*90W
Rated power:2*40W
Number of channels: Dual channels
Audio Input: Bluetooth-Compatible / FM Radio / USB / AUX / SD Card
USB/TF: 32G Max
Support Music Format MP3 / WAV / WMA / APE / FLAC
FM Frequency: 87.5-108MHz