UE WONDERBOOM 4 Speaker – Blue

Meet the speaker that refuses to slow you down. The Ultimate Ears WONDERBOOM 4 in Blue delivers full, immersive 360° audio with punchy, room-filling bass — all from a compact, rugged build you can genuinely take anywhere.

Built for Every Environment

Rated IP67 waterproof and dustproof, the WONDERBOOM 4 survives submersion up to 1 meter for 30 minutes, shrugs off drops from 5 feet (1.5m), and even floats — making it the perfect companion for poolside hangs, beach trips, muddy trails, or a steamy shower. When you step outside, hit Outdoor Boost to engage an EQ mode tuned to cut through ambient noise for louder, more powerful playback in open-air spaces. Prefer spoken content? Podcast Mode optimizes clarity for voices, making podcasts and audiobooks sound crisp and natural.

All-Day Sound, Zero Compromise

Two 1.57" active drivers and two passive radiators project balanced sound in every direction, while a rechargeable lithium-ion battery via USB-C delivers a full 14 hours of playtime. Push the range out to 131 feet (40m) via Bluetooth and pair a second WONDERBOOM 4 for true left-right wireless stereo. Android users on 6.0+ get one-tap setup through Google Fast Pair. Adventure longer. Sound better.