ITEM NAME:Amplifier Amp + Remote Speaker for 2-channel 500W Car Auto MOTO boat USB MP C2N6 Amplifier Amp + Remote Speaker for 2-channel 500W Car Auto MOTO boat USB MP C2N6 Amplifier 500W + CH-2 remote control to high speaker Car / Motorcycle / Boat MP3 with USB port; this product does not contain high speaker USB port function to read Mp3 file; USB port designed for charging phone / Mp3, Mp4, it is not recommended to power tablet pc With cable for high-in speaker; Power cable is not supplied with, for food, thank you to use a jack coaxial cable 6mm Power FM frequency response: 87.5MHz-108MH; Has adjustable treble, volume, bass; Signal inputs: AUX plug Between Supply: DC12V; Frequency response: 20Hz ~ 20KHz; notice:power supply 12V. (not include) Output: 1 kHz, 4 SZ; Harmonic distortion: mound 0.05% 4SZ 1KHz; Signal to Noise Ratio: ≥85dB; Control:12dB ±10KHz; Low Control:12dB ±100Hz; Signal level: 220MV 47K; Package Includes:1x amplifier;1x remote control,2 x Cable Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.