Product Overview
The Ultimate Ears WONDERBOOM 4 Portable Waterproof Bluetooth Speaker redefines what’s possible in a compact wireless speaker. Designed for adventurers, music lovers, and anyone who refuses to compromise on sound quality, this ultra-portable speaker delivers surprisingly powerful, full-spectrum audio from every angle—no matter how small its footprint. Whether you’re lounging poolside, hiking through rugged trails, or hosting an impromptu backyard gathering, the WONDERBOOM 4 brings rich, crisp, and bass-forward sound wherever life takes you. Engineered with durability, convenience, and sustainability in mind, it’s more than just a speaker—it’s your go-to companion for all-day entertainment.
Key Features
- Surprisingly Bigger 360-Degree Sound: Despite its petite size, the WONDERBOOM 4 delivers immersive, room-filling audio with enhanced drivers that push deep bass and clear highs. The 360-degree sound projection ensures consistent listening quality whether you’re standing in the center of a circle or off to the side. Enjoy up to 14 hours of continuous playtime, so the beat never breaks—even on extended outdoor adventures or spontaneous beach days.
- Outdoor Boost and Podcast Mode: Tailored audio settings adapt to your environment. Press the Outdoor Boost button to amplify volume and clarity for open-air settings like parks, beaches, or campsites. For spoken-word content, activate Podcast Mode to enhance vocal presence and dialogue intelligibility, making podcasts, audiobooks, and voice calls easier to follow and enjoy.
- IP67 Waterproof, Dustproof, and Floatable Design: Rated IP67, this speaker is built to thrive in wet conditions. It can be fully submerged in up to 1 meter (3 feet) of water for 30 minutes without damage, making it perfect for pool parties, lakeside picnics, showers, or accidental drops into puddles. Its dust-resistant construction also protects against sand, dirt, and debris—ideal for travel, festivals, or active lifestyles.
- Double Up for Stereo Sound: Expand your audio experience by pairing two WONDERBOOM 4 speakers. A single tap links both units into a unified mono output for louder combined playback. Tap again to activate true stereo mode, where one unit handles left-channel sound and the other delivers right-channel audio—creating a wider, more dynamic listening field perfect for group settings or immersive music sessions.
- Durable Wireless Speaker With Range: Built to endure real-world use, the WONDERBOOM 4 survives accidental drops from up to 5 feet (1.5 meters) onto hard surfaces. Its dirt-resistant exterior stays clean in muddy or sandy environments, and the integrated carry loop makes it easy to attach to backpacks, bikes, or towels. With a wireless range of up to 131 feet (40 meters), you’re free to move around your yard, patio, or campsite without losing connection or audio sync.
- Eco-Friendly Build: Reflecting Ultimate Ears’ commitment to environmental responsibility, the WONDERBOOM 4 incorporates a minimum of 31% post-consumer recycled plastic by weight into its construction. This reduces waste and supports sustainable production—without sacrificing strength, performance, or longevity.
Technical Specifications
- Battery Life: Up to 14 hours of continuous playback on a full charge
- Charging Method: USB-C cable required (not included in package)
- Wireless Connectivity Range: Up to 131 feet (40 meters) via Bluetooth
- Water Resistance Rating: IP67 certified—submersible up to 1m depth for 30 minutes
- Drop Test Resistance: Survives drops from heights up to 5 ft / 1.5 m
- Environmental Protection: Dustproof and floatable design
- Sustainability: Minimum 31% post-consumer recycled plastic content by weight
- Special Features: Outdoor Boost button, Podcast Mode, floating capability, dirt-resistant surface, carry loop
Benefits & Use Cases
The Ultimate Ears WONDERBOOM 4 excels in scenarios demanding both reliability and high-performance audio. Its rugged, weather-resistant build makes it ideal for beach trips, pool parties, camping excursions, and outdoor festivals. The speaker’s ability to float adds extra peace of mind near water, while the long 14-hour battery life ensures uninterrupted music during day-long events or road trips. Thanks to its 360-degree sound dispersion, audio remains balanced and engaging no matter where listeners are positioned.
For those who value versatility, the WONDERBOOM 4 adapts seamlessly between solo and dual configurations. Use it alone for personal listening or pair it with another identical model to create a richer, more expansive soundstage—perfect for larger gatherings or outdoor concerts. The intuitive controls allow quick switching between modes, so you spend less time adjusting settings and more time enjoying the moment.
Whether streaming your favorite playlist, catching up on a podcast, or taking hands-free calls, the WONDERBOOM 4 delivers clear, distortion-free audio. Its lightweight design and built-in loop make transport effortless, while the dirt-resistant finish requires minimal cleaning after use in challenging environments. From urban commutes to mountain hikes, this speaker is engineered to keep up with your lifestyle.
Important Notes
Please note that the WONDERBOOM 4 does not include a charging cable in the box—you’ll need a standard USB-C cable to recharge the battery. While the speaker is highly durable and meets IP67 standards for submersion up to 1 meter for 30 minutes, it is not designed for prolonged underwater activities such as diving or snorkeling. Avoid exposing the device to extreme temperatures, direct sunlight for extended periods, or submerging it deeper or longer than specified. The speaker connects exclusively via Bluetooth and does not support wired audio input through a 3.5mm jack or other analog connections.
