The MS-RA210 marine stereo from Fusion (R) is a stylish addition to your boat. Incorporating some of the Apollo ™ Series key features, the stereo includes built-in Digital Signal Processing (DSP) technology, modern design aesthetics and advanced source options. Designed and engineered for the harsh marine environment, the MS-RA210 stereo has an IPX6- and IPX7-rated water-resistant front panel to perform and last on board. Providing uniformity across the helm, the black front face blends seamlessly into black glass panels, complementing other electronics and MFDs for a tidy and elegant installation. With your stereo connected to an NMEA 2000 (R) network with an appropriate speed sensor installed, selecting Speed vs. Volume from the stereo’s settings menu enables audio volume to be automatically adjusted based on your boat’s speed. Faster = louder; slower = lower volume. Compatible speed sources include speed over ground, speed through water, engine RPM or wind speed.