Watertight Marine Cd/Usb Receiver; Watertight Flip-Down Console; Meets Or Exceeds Astm B117 (Salt/Fog Exposure); Meets Or Exceeds Astm D4329 (Uv Exposure); Humi Seal Coated Pcb; Cd/Mp3/Wma Playback; Rear Usb Port With Ipod Audio Direct Connect; 2-Channel Rca Audio Auxiliary Inputs; Sirius Direct Connect Ready; 45W X 4 Built-In Amp; Beat Eq For Sound Adjustment; Magna Bass Ex Sound Enhancement; 4-Channel/2-Volt Rca Output (Front + Rear/Subwoofer); Wireless Rf Remote Ready With Optional Mf1 Remote Kit; Wired Marine Remote Ready With Optional Mw1/Mw2 Controllers; Wireless Remote Ready With Optional Rcb176 ..