Ultimate Ears Wonderboom 4

The Ultimate Ears Wonderboom 4 and Wonderboom Play are both rugged, portable Bluetooth speakers offering water-resistant functionality and USB Type-C charging. The most notable upgrade in the Wonderboom 4 is its superior battery performance, offering up to 14 hours of playback compared to the 10 hours provided by the Wonderboom Play. Furthermore, the Wonderboom 4 is slightly heavier, weighing 0.42 kg versus the Play model's 0.318 kg, suggesting potential internal component changes or battery capacity adjustments. Despite these differences, both speakers share identical physical dimensions and fundamental connectivity options. For users prioritizing extended playtime on a single charge, the newer Wonderboom 4 represents a clear improvement over its predecessor.