This Kenwood digital media receiver is great for the boat. With no moving parts, you never have to worry about the damaging your CD or the head unit. Connect your device through the USB or AUX on the front of the unit or wirelessly through the Bluetooth. Hard-wired remotes are available for easy control of your music. Conformal coating keeps moisture out of the internal circuitry, plus special double covers for the USB and aux inputs on the front panel.