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  • Front. Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Cobalt Blue.
  • Surprisingly Bigger 360 Sound + Great Outdoor Speaker
  • The text on the image is grouped as follows: 1. "Outdoor Boost + Podcast Mode + EQ for Outdoors. EQ for Vocals." The corrected text is: "Outdoor Boost + Podcast Mode + EQ for Outdoors. EQ for Vocals."
  • 14 HOURS OF BOOM ON A SINGLE CHARGE
  • The text on the image is grouped and corrected as follows: 1. 104 mm (4.09 in) 2. Volume Control 3. USB-C Charging Port 4. Bluetooth Pairing 5. Double Up Ears 6. Ultimate Outdoor Boost/ Podcast Mode 7. Power On/Off 8. 31% Recycled Plastic* 9. FSC SC MRAS
  • Designed for a Positive Future. Made with Recycled Plastic. Responsible Packaging.
  • The text on the image reads: "Double Up for Stereo Sound. Twice the Sound. Twice the Wonder."
  • Waterproof + Floatable IP67 Rated for Durability.
  • Ultimate Ears - Wonderboom 4 - Unboxing Video video 3 minutes 17 seconds
  • Logitech - Wonderboom 4 Unboxing video 0 minutes 30 seconds

Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Cobalt Blue

Model:
984-001877
SKU:
6584240
Highly rated by customers for:
$79.99
Save $20
Comp. Value: $99.99

Customer reviews

Rating 4.8 out of 5 stars with 276 reviews

Rating Filter

Rating by feature

  • Sound Quality

    Rating 4.7 out of 5 stars

  • Battery Life

    Rating 4.8 out of 5 stars

  • Range

    Rating 4.7 out of 5 stars

Pros mentioned filter

Cons mentioned filter

95%would recommend to a friend

Customers are saying

Customers highly value the WONDERBOOM 4 Portable Wireless Bluetooth Speaker for its sound quality and portability. Many appreciate the speaker's good battery life and easy Bluetooth connectivity. The water resistance is a welcomed feature, along with the volume and size. Overall, customers seem to enjoy the bass and waterproof design.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 10 Showing 181-200 of 276 reviews
  • Pros mentioned:
    Sound quality

    Soeaker

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great product. Sounds great. Will buy again. Will recommend this great product

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Hyper Pink

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thanks for the glowing review! We're thrilled the WONDERBOOM 4 is delivering impressive sound and style—Hyper Pink never sounded so good. Your recommendation means a lot! Logitech

  • Pros mentioned:
    Sound quality

    Great little speaker

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This speaker puts out great sound with just enough base to sound like a larger unit

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Your feedback means a lot to us, and we’re so glad to hear you’re enjoying your Logitech device. We work hard to create products that make life easier and more enjoyable, and it’s great to know we hit the mark. Thanks again for your support! Logitech

  • Pros mentioned:
    Sound quality

    Nice little speaker

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great sound for a small speaker and a relatively low price

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Sand Beige

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      We’re happy to hear you’re enjoying the Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker. We’re thrilled to know it’s meeting your expectations. Your support means a lot to us. Logitech

  • Pros mentioned:
    Sound quality

    Awesome speaker in small size

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    awesome sound. Bluetooth connection is great. Small size but wonderful sound

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Hyper Pink

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thanks for the great review! We're glad the WONDERBOOM 4 is delivering powerful sound and reliable Bluetooth performance in such a compact design. Appreciate your support. Logitech

  • Great speaker

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Amazing speaker, very loud volume but clear and crisp.

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      We appreciate your feedback and are glad to hear the product is working smoothly. Thanks for being part of the Logitech family. Logitech

  • Pros mentioned:
    Sound quality

    Wonderboom speaker

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very nice speaker for it siz Great sound all round is very great

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thanks for the thoughtful review! We’re glad to hear our product is delivering the quality and convenience you were looking for. Your feedback helps us keep improving, and we’re grateful for your trust in Logitech. Logitech

  • Pros mentioned:
    Sound quality
    Best Buy Employee

    Great for camping

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    Best Buy Employee
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great sound and volume, took this camping with the family and it was the perfect companion.

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Sand Beige

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      We're thrilled to hear that your Ultimate Ears WONDERBOOM 4 Portable Wireless Bluetooth Speaker was the perfect companion for your family camping trip! Logitech

  • up and running right away

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    super easy to set up! got it synced with my phone on the first try - from opening the box to listening to music in < 2 minutes :-)

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thank you for sharing your experience! We’re thrilled the WONDERBOOM 4 was so quick to set up and delivered instant music enjoyment. Your feedback means a lot to us! Logitech

  • Pros mentioned:
    Sound quality

    Speaker

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The sound is loud for such a small speaker but the sound quality may not but to everyone’s standards. It isn’t as crisp as other speaker but for the price I think it’s perfect!

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Sand Beige

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thanks for the thoughtful review! We’re glad the WONDERBOOM 4 delivers solid volume and value for you. Your feedback on sound quality is noted—it helps us keep improving while offering great performance at a fair price. Logitech

  • Pros mentioned:
    Sound quality

    Good but not great

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It's an alright speaker as for sound and I do like the outside boost, but the audio tends to cut in and out during use which is something that has never been an issue with any of my other wonder boom or other branded speakers. By the time I realized that, my return window had ended, so I guess I'm stuck with it. It won't be my favorite like I thought it would be, but it'll get used.

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black

    No, I would not recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thanks for sharing your experience. We're glad to hear you’re enjoying the Outdoor Boost feature, but we’re sorry to learn about the audio interruptions. We'd love to help sort this out—please reach out to our social care team at **socialcare@logitech.com** with the following details:

      - Name
      - Email Address
      - Country
      - Product Name
      - Brief description of issue

      We’re here to help and want to make sure your speaker performs at its best. Logitech

  • Pros mentioned:
    Sound quality

    Good little speaker

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Although this speaker is small in size it delivers a lot of sound.

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thanks for the great feedback! We're so glad to hear the WONDERBOOM 4 is packing a punch despite its compact size. It’s always awesome when a small speaker surprises with big sound—perfect for on-the-go listening. Enjoy every beat! Logitech

  • Pros mentioned:
    Sound quality

    Decent Speaker

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Cuts out occasionally, but a quality speaker that can get rather loud. All in all I would recommend it.

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Hyper Pink

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thank you for sharing your feedback on the WONDERBOOM 4 speaker! We appreciate you taking the time to let us know your thoughts, especially about its loudness and overall recommendation. Logitech

  • Pros mentioned:
    Battery life

    LOVE IT

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Little tank, i love it, the battery life is actually really good. Hope that doesnt change with time.

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Joyous Brights

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thank you for the fantastic review! We're so glad to hear you're loving the WONDERBOOM 4 and its "little tank" durability. We design our speakers to have a long-lasting battery, and we're confident you'll enjoy it for a long time. We appreciate you sharing your experience! Logitech

  • Pros mentioned:
    Sound quality

    Speaker

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love this speaker is is amazing and loud for work when closing

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      So glad you’re enjoying it! Your feedback helps us keep improving. Thanks for being part of the Logitech community. Logitech

  • Pros mentioned:
    Sound quality

    Best speaker for the price

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Best speaker for the price, very loud if needed to be.

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Sand Beige

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      We truly appreciate you sharing your thoughts. It’s fantastic to hear the product is delivering as expected. Your feedback helps us grow and refine what we do. Thanks for choosing Logitech! Logitech

  • Pros mentioned:
    Connectivity

    Packs a punch

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I had the older model and upgraded to this one since it has USB-C, love the ability to connect up to 4 together too.

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      We're thrilled to hear you upgraded to the Ultimate Ears WONDERBOOM 4 and are loving the addition of USB-C connectivity. The ability to connect up to four speakers together really takes the party to the next level, and it's great to know you're enjoying that feature too! Logitech

  • Pros mentioned:
    Sound quality

    Perfect gift for teens

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Perfect BT speaker for teens. This is the 3rd or 4th one we’ve purchased. Makes a great gift. A pair of them will work together as left and right stereo channels. Sounds great for its size.

    This review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thanks for sharing your positive experience! We're glad they're a hit with teens. Logitech

  • Pros mentioned:
    Sound quality

    Excellent product

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The quality of the sound is so clear and the item can be used anywhere. The volume is great. Energy saver.

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Sounds like your Ultimate Ears WONDERBOOM 4 is hitting all the right notes! We're delighted you're experiencing such clear sound quality, appreciating its go-anywhere versatility, robust volume, and energy-saving features. It's built to perform wherever you take it! Logitech

  • Pros mentioned:
    Portability

    Beach worthy

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It works really well and didn’t have any issues even after being in the sand.

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thanks for the awesome feedback! We're thrilled to hear the WONDERBOOM 4 held up strong—even in the sand. Your experience highlights its rugged, beach-ready design perfectly! Logitech

  • Pros mentioned:
    Sound quality

    Good speaker

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Better than JBL, very good sound, 100% recommended

    I would recommend this to a friend
    • Brand response from Logitech
      Posted .

      Thanks for the awesome feedback! We're glad the WONDERBOOM 4 delivers the sound and durability you were looking for. Enjoy the music wherever life takes you. Logitech

Page 10, Showing 181-200 of 276 reviews
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