The Pyle PLUTVA104BT Bluetooth 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 system includes the sleek bullet-designed speakers, 4-channel power amplifier, Bluetooth connection console and all the necessary cables and wiring -- to provide mobile audio on the move. Enjoy instant Bluetooth wireless music streaming. It works with all of your favorite devices and setup is easy. Now you can enjoy mobile music on the go with the Pyle Bluetooth Waterproof Speaker and Amplifier Sound System.