Ultimate Ears Boom 4 (Renewed) – Portable Waterproof Bluetooth Speaker with 360° Sound, 15-Hour Battery, 147 ft Range – Blue

Experience immersive 360-degree sound, anywhere you go

The Ultimate Ears Boom 4 is a compact, rugged Bluetooth speaker designed for outdoor life. This renewed unit delivers bold, balanced audio with a wide soundstage, so you hear each instrument as if you were in the front row. The blue finish adds a pop of color that complements sunny days and city escapes alike.

On the outside, you’ll notice a sturdy build that’s IPX7 waterproof and drop-proof up to 1.5 meters. That means splashes, rain, or accidental bumps won’t derail your listening session. It also floats on water, making it easy to spot and recover near pools or at the lake.

• 360-degree sound with deep, accurate bass across the listening space
• Rugged, waterproof design built for outdoor use
• Long-lasting 15-hour battery for all-day adventures
• Wide Bluetooth range up to 147 feet, depending on environment

Key features that adapt to your day

Enjoy hands-free control with the Magic Button and quick access to playlists from popular streaming services on Android and iOS. The PartyUp feature lets you synchronize multiple compatible BOOM models to create a bigger, immersive soundscape for gatherings.

• Magic Button for play, pause, skip, and service control
• PartyUp to pair several speakers for a broader audio footprint
• Easy pairing with supported streaming apps and devices

Real-world use cases

Picture a sunlit backyard barbecue, a weekend campsite, or a beach stroll with friends. The Boom 4’s robust sound fills spaces without overwhelming nearby conversations. The portable design keeps your music moving—from patio to dock to campsite—and the floating capability adds a playful touch near water.

What’s included and practical tips

As a renewed unit, you’ll typically receive the speaker in tested, restored condition with full feature parity and a limited warranty (verify current terms at checkout). For best results, maintain battery health by charging fully before extended use and keep the device within line-of-sight of your phone during initial pairing.

• Charge fully before extended use
• Keep it within range of your phone for stable playback
• Use PartyUp to expand your sound with compatible speakers

In short, the Boom 4 offers a balanced, immersive listening experience with outdoors-ready durability. It’s a versatile companion for music lovers who value portability, resilience, and easy control.