Ultimate Ears WonderBoom 4 Portable Bluetooth Speaker – Active Black

Small Speaker. Massive Sound.
Take your music anywhere with the Ultimate Ears WonderBoom 4 Portable Bluetooth Speaker. Despite its compact size, this ultraportable speaker delivers surprisingly big 360° stereo sound with crisp highs and punchy bass that can fill any room or outdoor space.

Whether you’re listening to music, podcasts, or audio books, the new Podcast Mode delivers extra-clear vocals, making spoken word sound better than ever. Activate Outdoor Boost to optimize audio for open-air adventures, so your beats carry farther.

The WonderBoom 4 is built to keep up with your lifestyle. Its IP67 rating ensures it’s waterproof, dustproof, and dirtproof, and it even floats in water. With a durable design tested to withstand 5-foot drops and a wireless range of up to 40 meters (131 feet), you can take it anywhere—beach, pool, park, or camping trips.

Stay unplugged with up to 14 hours of battery life, and if you want even more sound, pair two WonderBoom 4 speakers for a full two-channel stereo experience. Plus, this speaker is built with a minimum of 31% post-consumer recycled plastic, so your music adventures are eco-friendly too.

Key Features:

Immersive 360° Sound
Small but mighty — fills any space with rich bass and crisp audio in all directions.

Podcast & Outdoor Mode
Enhance spoken word clarity or activate Outdoor Boost to tailor audio for open-air listening.

Rugged & Adventure-Ready
IP67 waterproof and dustproof rating. Floats on water and survives 5-foot drops.

Extended Playtime
Rechargeable lithium-ion battery provides up to 14 hours of uninterrupted playback.

Wireless Freedom
Bluetooth connectivity allows up to 40 meters (131 feet) of range. Quick pairing with Google Fast Pair.

Double Up
Pair two WonderBoom 4 speakers to double the sound or enable full stereo mode for left/right channel separation.

Eco-Friendly Design
Includes minimum 31% post-consumer recycled plastic, excluding packaging.

Technical Specifications: