Color Black + Silver Brand No Model V14 Quantity 1 Piece Material Aluminum alloy Shade Of Color Black Screen Size 1.8 inch Amplifier Class A Function MP3 PlayerRadio FM Frequency 87.5~108 fps Frequency Response Range 20~20K MHZ Number of Channels 4 Rated Power 30+30+30+30 W Input Power 30+30+30+30 W Input Impedance 4~8ohm Peak Power Output 320 W THD SNR 85dB Sensitivity 220MV 47K Remote Control Yes Power Supply 12 V Interface/Port USB 2.0SD card slotOthersMP3 / AUDIO IN / VCD/DVD External Memory Max. Support 16 GB Application carmotorcyclegolf cartBoat Packing List 1 x Amplifier 1 x Remote controller (1 x CR2025)