Ultimate Ears WONDERBOOM 4 — Portable Bluetooth Speaker (Gray) | 360° Big Bass, IP67, 14 Hours, 131ft (40m) Range

Small form, big sound: the Ultimate Ears WONDERBOOM 4 delivers enhanced 360° audio and deep bass from a compact, portable package. Engineered for clarity, it includes Outdoor Boost for louder, wider playback in open spaces and a Podcast Mode that brings vocals forward for clearer speech. Battery life runs up to 14 hours on a single charge. Built to handle the elements with an IP67 rating — it can be submerged in 1 m of water for 30 min, is dust-protected, and even floats — making it ideal for poolside, beach, or shower use. Want more volume? Pair two WONDERBOOM 4 speakers wirelessly: press once to double up, press again to switch to true stereo with left and right channels. Leave your phone nearby or roam freely — the Bluetooth range extends to 131ft (40m). Rugged and travel-ready, the speaker is dirt resistant, drop proof, and includes a convenient loop for carrying or attaching.