Ivation Water Resistant Shockproof Bluetooth 4.0 Speaker - Rated IPX7 for Full Immersion in Water - with Built-in 2200mAh Battery for 6 Hours Playtime Waterproof, shockproof, dustproof & rated IPX7 for 100% protection against water & dust. Rugged rubberized exterior for ultimate impact resistance. Advanced Bluetooth 4.0 connectivity; Superior version of Bluetooth tehnology that consumes less energy and delivers crystal-clear sound. Jaw-dropping sound quality and volume; Equipped with a passive subwoofer and two drivers to deliver the rich bass and sound fidelity you crave. Lithium ion rechargeable battery that lets you enjoy up to 9 hours of uninterrupted playtime on a single charge. Doubles as a shower speaker: Listen to your favorite tunes while showering and still retain control of all functions without having to step out of shower.