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Discover a portable audio experience with the Ultimate Ears WONDERBOOM 4. Designed for those who are always on the move, this speaker combines durability, portability, and superior sound quality into one compact package. With its 360° sound effect and passive radiator design, the WONDERBOOM 4 delivers clear, immersive audio, whether you're indoors or outdoors. It's built to last, featuring a rugged, waterproof, and dustproof construction that can withstand any adventure. The speaker also supports True Wireless Stereo (TWS) technology, allowing you to pair two WONDERBOOM 4 speakers for an enhanced stereo sound experience. Plus, with its eco-friendly design and USB Type-C charging, it's easy to use and supports sustainable practices. Suitable for both men and women, the WONDERBOOM 4 is a great companion for any occasion, whether you're hosting a party, exploring the outdoors, or just enjoying your favorite tunes at home.