Ultimate Ears Boom 4 Portable Waterproof Bluetooth Speaker – 360° Sound, 15h Battery, Lilac

Overview

Meet the Ultimate Ears BOOM 4, a compact, adventure-ready wireless speaker designed to travel with you. It delivers balanced 360-degree sound with crisp highs and a punchy bass that fills small to mid-sized spaces, from sunny patios to lakeside lounging. The lilac finish adds a playful accent to outdoor setups, while the rugged build keeps pace with active days.

Engineered for outdoor life, the BOOM 4 withstands the elements and occasional bumps, while staying light enough to tuck into a backpack. A built-in battery powers music for up to 15 hours on a single charge, and USB-C charging keeps momentum going on road trips or weekend getaways. Four EQ modes let you tune the tone to your mood or venue, or you can customize your own profile to suit different surroundings.

Why this speaker stands out

In addition to standalone listening, you can connect with other Ultimate Ears speakers for a bigger, surround-like experience. The Magic Button lets you play, pause, skip, and switch playlists from your favorite streaming apps with a single press.

With PartyUp you can link multiple devices like BOOM, MEGABOOM, EVERBOOM, EPICBOOM, and HYPERBOOM to fill larger spaces with synchronized sound. The waterproof design is IP67-rated and the unit is also drop-proof, so it handles damp environments and the occasional tumble.

Key specs and features

• Portable 360° sound with clear audio and deep bass for versatile listening anywhere
• 15-hour battery life; USB-C charging for easy recharging
• IP67 waterproof and drop-proof protection up to 1.5 meters
• Bluetooth range up to 45 meters (147 feet) for flexible roaming
• PartyUp to pair multiple speakers and amplify the experience
• Magic Button for one-touch playlist control
• Crafted with at least 52% post-consumer recycled plastic by weight

Sound customization

• Four EQ modes to tailor the sound
• Option to create a personalized sound profile

Real-world use and color

Available in Lilac, the BOOM 4 blends well with outdoor setups, bathrooms, or living spaces where moisture is a consideration. Lightweight and rugged, it travels well in backpacks and beach totes, ready to deliver sound where you want it.

What’s in the box: the BOOM 4 speaker; USB-C charging cable is not included. This design invites you to explore sound settings and take the party anywhere you go.