For most portable stereos, a boat is a great place to die. They simply can’t handle the marine environment. Enter Fusion, which purpose-built the StereoActive with an IPX7 water-resistance rating. Heck, this thing even floats. You choose the music with Bluetooth audio streaming, USB, or AM/FM radio. Large scalloped buttons make it ideal for use on a kayak or SUP because they can be manipulated with a paddle.