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 $149.99
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  • Free 30-day returns
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Arrives by Sat, Jun 13
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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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$149.99
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Shipping, arrives by Wed, Jun 10 to Columbus, 43215
Sold and shipped by Logitech Authorized Store
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$165.26
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Shipping, arrives by Thu, Jun 11 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
May 31, 2025
john
Sold and shipped bySecondipity
4 out of 5 stars review

Verified Purchase

Very good wireless speaker for the money

After reading reviews online I did expect better overall sound quality. It does come with an equalizer app that allows you to adjust the the sound which did help the improve output.

Helpful?1VA7XG38PCLS7386822928
reply from Logitech

We appreciate your honest feedback on the Ultimate Ears BOOM 4 wireless speaker! It's great to hear that you find it to be a very good wireless speaker for the money, and we're especially glad that the equalizer app helped you fine-tune the sound output to your liking. We understand that sound quality expectations can vary, and we're always striving to deliver the best audio experience. Thank you for sharing your positive experience and for recognizing the value you've found in the BOOM 4.

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