Bring rich, 360° sound with deep bass wherever you go with the UE Ultimate Ears WonderBoom 4. Outdoor Boost and Podcast Mode keep music and voices clear in noisy environments. Enjoy up to 14 hours of battery life and a Bluetooth range up to 40 m. IP67-rated, floatable, and dustproof for dependable outdoor use. Pair up to two WonderBoom 4 speakers for bigger sound. Includes attached bungee loop, USB cable, and quick start guide printed inside the box.