Bring rich, 360° sound anywhere with the Ultimate Ears Wonderboom 4. Outdoor Boost and Podcast Mode keep music and voices clear in noisy environments, while big bass and balanced audio deliver an immersive listening experience. The IP67-rated, floatable and dustproof design stands up to water and outdoor use, and the speaker provides 14 hours of battery life. Pair up to two Wonderboom 4 speakers for bigger sound, stream over Bluetooth (compatible with 4.0/5.0/5.2) up to 40 m, and use the attached loop for easy carrying. Includes bungee, USB cable, Quick Start Guide, and a 24-month manufacturer warranty.