Ultimate Ears BOOM 4 Portable Waterproof Bluetooth Speaker With 360-Degree, Bold, Immersive, Crystal-Clear Sound, Cobalt Blue
Ultimate Ears BOOM 4 Portable Waterproof Bluetooth Speaker With 360-Degree, Bold, Immersive, Crystal-Clear Sound, Cobalt Blue
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Ultimate Ears

Ultimate Ears BOOM 4 Portable Waterproof Bluetooth Speaker With 360-Degree, Bold, Immersive, Crystal-Clear Sound, Cobalt Blue

Key item features

  • Powerful Sound: The BOOM 4 features a larger woofer for powerful 360-degree sound and thundering bass with great balance and clarity.
  • Extended Battery Life: Enjoy a massive 20-hour battery life with the latest cell technology, allowing you to boom all day long.
  • Waterproof Design: Rated IP67 waterproof, this floating Bluetooth speaker is perfect for pool parties and outdoor adventures.
  • PartyUp Feature: Use the Ultimate Ears BOOM app to pair multiple BOOM, MEGABOOM, EVERBOOM, EPICBOOM, and HYPERBOOM speakers for an ultimate surround sound experience.
  • One-Touch Controls: Play, pause, skip, and control music directly from your favorite streaming services with one-touch playlists on Spotify, Amazon Music, or Apple Music.
  • Eco-Friendly Materials: The plastic parts in the BOOM 4 speaker include a minimum of 54% post-consumer recycled plastic by weight.
  • Customizable EQ: Experience 4 different EQ modes or customize your own for personalized sound settings.
  • Extended Range: With a wireless range of 45 meters (147 feet), you can walk away and keep the tunes coming.
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Current price is $159.00
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  • Free 30-day returns
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Arrives by Mon, Jun 1
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Sold and shipped by The Deal Source
4.2 stars out of 5, based on 175 seller reviews(4.2)
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$162.90
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Shipping, arrives by Fri, May 29 to Columbus, 43215
Sold and shipped by antonline.com
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Customer ratings & reviews

4.2 out of 5 stars
stars31 ratings15 reviews
How item rating is calculated
  1. 5 stars68% (21)
  2. 4 stars13% (4)
  3. 3 stars3% (1)
  4. 2 stars0% (0)
  5. 1 star16% (5)

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Showing 1-3 of 15 reviews

Apr 29, 2026
Roy
5 out of 5 stars review

Seller Verified Purchase

BOOM 4 - Cobalt Blue

Great sound and durable. Second time purchased. Worth the cost and better quality than more expensive similar portable speakers. I like the ability to pair both speakers at the same time for better sound.

Review from Ultimate Ears
Helpful?1VA7XG38PCLS7386822928
Dec 24, 2025
Walmart customer
5 out of 5 stars review

Seller Verified Purchase

Outstanding quality and sound

I purchased this product or brand a long time ago. It's been a pleasure to see that they are still making quality products and sounds. For a little speaker it sure does pack a punch. I'm amazed at the sound.

Review from Ultimate Ears
Helpful?1VA7XG38PCLS7386822928
Feb 9, 2026
Mikey P
5 out of 5 stars review

Seller Verified Purchase

Love it

Compact size robust output. Great Value for the performance. Lightweight and easily transported.

Review from Logitech
Helpful?1VA7XG38PCLS7386822928