Take your music to new depths with the BOOM Swimmer Duo Waterproof Bluetooth Speaker. This small yet mighty sound system is designed to handle your active lifestyle. The electronic components are nestled inside a waterproof, dirt-proof, and shock-proof outer shell. You can literally take it anywhere. In addition, the Swimmer Duo comes with a tail. When you attach it, the tail can actually loop around a variety of objects to hold the speaker wherever you need it. Then, when the tail isn’t in place, the Swimmer Duo has a suction cup base to adhere to even more surfaces. To really deliver, this speaker has stereo linking technology. With this, you can sync two speakers for true surround sound. It comes in four vibrant colors to really stand out.