Enjoy music on land or in the water with the Dolphin Diver Sport portable and waterproof Bluetooth speaker. Not only does it have flashing LED lights on the side but you can unleash its bold sound through its USB and SD Card ports’ aux input’ and built-in FM radio. Take it anywhere with its elastic carrying handle! The waterproof speaker also can be paired to your smartphone for audio streaming. And WaveSync technology lets you pair 2 of them together second speaker sold separately to double your audio coverage!