Hipipooo Portable Waterproof Bluetooth 3.0 5W Wireless Bluetooth Speakers C6 Stereo Sound box for Phones Computer Tablet, 5m Range, 5 Hours of Playtime(Red) Loud voice,portable,durable,it can still work after accidental drop,decent battery life Waterproof,doesn't mean it can submerged in the water for a long time,it also can not float on the water.But it is ok for splash water. Both of the carabiner and the suction cup are removeablethis makes it convenient to put in your pocket It can be widely used,such as in the yard,sticks to the windshield of the golf cart while golfing,poolside,sticks to the bathtub.camping,kayaking and so on,but not recommand for jet ski Support SD card