The Pyle PLUTVA102 Waterproof Speaker and Amplifier System gives your vehicle versatile sound power on the go. Mount the dual 4'' marine grade construction speakers and cruise around with style. The sleek bullet-designed speakers provide mobile audio on the move. The system includes (2) wakeboard speakers, 2-channel power amplifier and all the necessary mounting hardware and cables to get connected. Additional features include 4 Ohm Impedance, 1-inch KEISV voice coils, 1-inch PEI dome tweeters, RCA line input -- all to provide music when you're on the go.