258370 Weight: 14.69 oz (416 g) Dimensions: 6.50 in x 5.12 in x 1.77 in (16.5 cm x 13.0 cm x 4.5 cm) Brand:SUOER Model:SON-169 Quantity:1 piece(s) Color:Silver Material:Aluminum alloy Amplifier Class:B Function:MP3 Player Frequency response:20~20000 Hz Number of Channels:2 Input Power:300W Peak Power Output:Main channel 300W x 2 bass 150W RMS Power Output:300W Input Sensitivity:16dB lnput Impedance:47K Signal To Noise Ratio:90 dB Slewing Rate:85% Input Voltage:12V Speaker Impedance:4~8 ohm THD (Total Harmonic Distortion):<1% Interface:Audio， MP3， VCD / DVD， DC 12V power Remote Control:Yes Application:car Other Features: Double IC control left and right channel and bass output， stronger power; With little distortion， the output dynamic characteristics， sound sweet; Overheating， overload automatic protection; Suitable for home， computer， car， motorcycle and outside use. Packing List: 1 x Amplifier