Experience remarkable audio with the boomBOTTLE H2O. The boomBOTTLE H20 packs remarkable wireless audio into a rugged waterproof frame, making it perfect for the poolside, beach, snow, or any other environment. A rechargeable lithium polymer battery provides up to 8 hours of continuous music playback. Easily control play, pause, track forward/backward, adjust volume, and more with the integrated controls of the boomBOTTLE speaker. A 50mm up-firing speaker and passive subwoofer produce impressive audio and improved acoustics. Works with all Bluetooth streaming A2DP audio devices including iPhone, iPod touch, iPad, Android Devices, Smartphones, Tablets, Laptops, and more. IPX7 waterproof rated. 4.5"H x 2.8" diameter.