Experience remarkable audio with the boombottle h2o the boombottle h20 packs remarkable wireless audio into a rugged waterproof frame perfect for the poolside beach snow or any other environment where do you take your music 50mm up firing speaker and passive subwoofer produce impressive audio and improved acoustics the up firing speaker sends music in all directions easily control play pause track forwardbackward adjust volume and more with the integrated controls a rechargeable lithium poly