I found the controls fairly intuitive and only had to resort to using the instruction manual to figure out what the BD/LD button was all about (band/loud). Sound quality was nothing short of astonishing, although the CD did skip while cruising through a slight chop. Unlike many stereos sold on the marine market, the MR-25 is specifically designed for use on boats, and it's protected from moisture by a clear exterior film and an anticorrosion CRC coating on the circuit board. The faceplate is removable, and can be stored in a protective faceplate case. A bonus: The LCD display is four color and is visible in all light conditions.