The RAM Mounts Fusion StereoActive adaptor connects your waterproof, Bluetooth speaker anywhere on your boat, camper or wherever you want it using RAM Mounts. The B-size adapter will work with the RAM Mounts gear you already have. Fusion is an industry leader in rugged marine speakers and RAM worked with Fusion to ensure the fit with its new StereoActive line. RAM Mounts rugged mounting system is perfect for a day on the sandbar or coming home from an early morning in the blind.