Compact Size: The BoomBuoy is made to take along with you on your daily adventures. Place it in your pocket, or clip it onto a backpack with the included carabiner. You will never want to leave home without it!Water Proof Speaker: With an IP67 rating, not only is the speaker waterproof but it is light enough to float along beside you as you relax in the water! Crisp Sound: The pocket-sized speaker includes a 3w 50mm omni-directional speaker that produces powerful clear audio for you to enjoy. The built in 500 mAh battery will give up to 7 hours of continuous run time.