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Ultimate Ears Boom 4 Portable Waterproof Bluetooth Speaker with 360-Degree, Bold, Immersive, Crystal-Clear Sound, Floating Speaker with 15-Hour Battery and 147ft (45m) Range 4 - Raspberry

4.3 4.3 out of 5 stars 291 ratings

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Carbon Neutral Certified by SCS Global Services enables companies to demonstrate carbon neutrality for their products by reducing carbon emissions throughout their operations and offsetting their remaining carbon footprint through the purchase of carbon credits. SCS Global Services is a global leader in third-party environmental and sustainability verification, certification, auditing, testing, and standards development. SCS is a chartered Benefit Corporation, reflecting its commitment to socially and environmentally responsible business practices.

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$127.60 with 15 percent savings
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Purchase options and add-ons

Brand Ultimate Ears
Speaker Maximum Output Power 10 Watts
Connectivity Technology Bluetooth
Audio Output Mode Stereo
Mounting Type Tabletop Mount

About this item

  • Ultimate Sound: The BOOM 4 portable waterproof Bluetooth speaker delivers rich, 360-degree sound and deep, accurate bass, all carefully balanced so you can hear every note
  • Powered for Adventure: This waterproof portable speaker has a rechargeable battery that stays powered, pumping tunes for 15 hours on a single charge
  • A Bluetooth Waterproof Speaker Made for the Outdoors: Rated IPX7 waterproof and drop-proof up to 15 feet (1.5 meters), the BOOM 4 floating Bluetooth speaker is virtually indestructible
  • Party Up: Use PartyUp on the Ultimate Ears Boom app to pair several BOOM, MEGABOOM, EVERBOOM, EPICBOOM, and HYPERBOOM portable Bluetooth speakers, creating the ultimate surround sound experience
  • Magic Button: Play, pause, skip, and control music directly from your favorite streaming service; set up one-touch playlists on platforms like Spotify, Amazon Music on Android, or Apple Music on iOS
  • Extremely Wireless: With 45 meters (147 feet) of range, you can walk away from your BOOM 4 wireless speaker and keep the tunes comin’
  • Made With Recycled Plastic: The plastic parts in the Ultimate Ears BOOM 4 wireless Bluetooth speaker include a minimum of 52% post-consumer recycled plastic by weight
› See more product details

Frequently bought together

Ultimate Ears Boom 4 Portable Waterproof Bluetooth Speaker with 360-Degree, Bold, Immersive, Crystal-Clear Sound, Floating Sp
This item: Ultimate Ears Boom 4 Portable Waterproof Bluetooth Speaker with 360-Degree, Bold, Immersive, Crystal-Clear Sound, Floating Speaker with 15-Hour Battery and 147ft (45m) Range 4 - Raspberry
$127.60
Get it as soon as Monday, Mar 24
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Lebakort Storage Case Compatible with Ultimate Ears UE Boom 4 3 Portable Waterproof Speaker (Pink Case, for Boom 4)
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  1. 1 sustainability feature

    Sustainability features

    This product has sustainability features recognized by trusted certifications.
    Carbon impact
    Carbon emissions from the lifecycle of this product were measured, reduced and offset.
    As certified by
    Carbon Neutral Certified by SCS Global Services

    Carbon Neutral Certified by SCS Global Services

    Carbon Neutral Certified by SCS Global Services enables companies to demonstrate carbon neutrality for their products by reducing carbon emissions throughout their operations and offsetting their remaining carbon footprint through the purchase of carbon credits. SCS Global Services is a global leader in third-party environmental and sustainability verification, certification, auditing, testing, and standards development. SCS is a chartered Benefit Corporation, reflecting its commitment to socially and environmentally responsible business practices.

    Climate Pledge Friendly

    Discover more products with sustainability features.Learn more
  2. 1 sustainability feature

    Sustainability features

    This product has sustainability features recognized by trusted certifications.
    Carbon impact
    Carbon emissions from the lifecycle of this product were measured, reduced and offset.
    As certified by
    Carbon Neutral Certified by SCS Global Services

    Carbon Neutral Certified by SCS Global Services

    Carbon Neutral Certified by SCS Global Services enables companies to demonstrate carbon neutrality for their products by reducing carbon emissions throughout their operations and offsetting their remaining carbon footprint through the purchase of carbon credits. SCS Global Services is a global leader in third-party environmental and sustainability verification, certification, auditing, testing, and standards development. SCS is a chartered Benefit Corporation, reflecting its commitment to socially and environmentally responsible business practices.

    Climate Pledge Friendly

    Discover more products with sustainability features.Learn more
  3. 1 sustainability feature

    Sustainability features

    This product has sustainability features recognized by trusted certifications.
    Carbon impact
    Carbon emissions from the lifecycle of this product were measured, reduced and offset.
    As certified by
    Carbon Neutral Certified by SCS Global Services

    Carbon Neutral Certified by SCS Global Services

    Carbon Neutral Certified by SCS Global Services enables companies to demonstrate carbon neutrality for their products by reducing carbon emissions throughout their operations and offsetting their remaining carbon footprint through the purchase of carbon credits. SCS Global Services is a global leader in third-party environmental and sustainability verification, certification, auditing, testing, and standards development. SCS is a chartered Benefit Corporation, reflecting its commitment to socially and environmentally responsible business practices.

    Climate Pledge Friendly

    Discover more products with sustainability features.Learn more
  4. 1 sustainability feature

    Sustainability features

    This product has sustainability features recognized by trusted certifications.
    Carbon impact
    Carbon emissions from the lifecycle of this product were measured, reduced and offset.
    As certified by
    Carbon Neutral Certified by SCS Global Services

    Carbon Neutral Certified by SCS Global Services

    Carbon Neutral Certified by SCS Global Services enables companies to demonstrate carbon neutrality for their products by reducing carbon emissions throughout their operations and offsetting their remaining carbon footprint through the purchase of carbon credits. SCS Global Services is a global leader in third-party environmental and sustainability verification, certification, auditing, testing, and standards development. SCS is a chartered Benefit Corporation, reflecting its commitment to socially and environmentally responsible business practices.

    Climate Pledge Friendly

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  5. 1 sustainability feature

    Sustainability features

    This product has sustainability features recognized by trusted certifications.
    Carbon impact
    Carbon emissions from the lifecycle of this product were measured, reduced and offset.
    As certified by
    Carbon Neutral Certified by SCS Global Services

    Carbon Neutral Certified by SCS Global Services

    Carbon Neutral Certified by SCS Global Services enables companies to demonstrate carbon neutrality for their products by reducing carbon emissions throughout their operations and offsetting their remaining carbon footprint through the purchase of carbon credits. SCS Global Services is a global leader in third-party environmental and sustainability verification, certification, auditing, testing, and standards development. SCS is a chartered Benefit Corporation, reflecting its commitment to socially and environmentally responsible business practices.

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Top Brand: Ultimate Ears

Highly Rated
100K+ customers rate items from this brand highly
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10K+ orders for this brand in past 3 months
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From the manufacturer

Ultimate Ears BOOM 4 Portable Waterproof Bluetooth Speaker With 360-Degree Sound
Ultimate Ears BOOM 4 Portable Waterproof Bluetooth Speaker With 360-Degree Sound

360° Crystal Clear Sound + Accurate Bass

Grab the super-portable wireless speaker built for adventure. Seriously waterproof with balanced 360° sound, deep bass, and one-touch music controls. it’s the ultimate go-anywhere speaker.

Ultimate Ears BOOM 4 Portable Waterproof Bluetooth Speaker With 360-Degree Sound

4 Preset EQ Modes + Customizable EQ

Pair the BOOM 4 with MEGABOOM, EVERBOOM, EPICBOOM and HYPERBOOM for more fun.

Compare Ultimate Ears Wireless Portable Speakers

BOOM 4

MEGABOOM 4

EVERBOOM

EPICBOOM

WONDERBOOM 4

HYPERBOOM

Customer Reviews
4.3 out of 5 stars 291
4.3 out of 5 stars 232
4.7 out of 5 stars 99
4.2 out of 5 stars 149
4.6 out of 5 stars 702
4.9 out of 5 stars 63
Price
$113.83 $169.99 $249.50 $255.94 $78.00 $365.69
360° Sound
Bold + Deep Bass Thundering Bass Ultra Bass Massive + Ultra Bass Surprisingly Big Super massive + extreme bass
Battery Life
Up to 15 h Up to 20 h Up to 20 h Up to 17 h Up to 14 h Up to 24 h
Connectivity and Range
Bluetooth 150 ft (45 m) Bluetooth 150 ft (45 m) Bluetooth 180 ft (55 m) Bluetooth 180 ft (55 m) Bluetooth 130 ft (40 m) Bluetooth 150 ft (45 m)
Water/Drop Proof
Yes Yes Yes Yes Yes IPX4
Ultimate Controls
Magic Button Magic Button Magic Button Magic Button N/A Magic Button
EQ Modes
Many Many Many Many Outdoor Boost , Podcast Mode Many
Pair Speakers
Many Ultimate Ears speakers Many Ultimate Ears speakers Many Ultimate Ears speakers Many Ultimate Ears speakers 2x WONDERBOOM 4 / WONDERBOOM Many Ultimate Ears speakers
Many Ultimate Ears speakers
✔ ✔ ✔ ✔ ✘ ✔

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Ultimate Ears Boom 4 Portable Waterproof Bluetooth Speaker with 360-Degree, Bold, Immersive, Crystal-Clear Sound, Floating Speaker with 15-Hour Battery and 147ft (45m) Range 4 - Raspberry
Ultimate Ears Boom 4 Portable Waterproof Bluetooth Speaker with 360-Degree, Bold, Immersive, Crystal-Clear Sound, Floating Speaker with 15-Hour Battery and 147ft (45m) Range 4 - Raspberry
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Ultimate Ears WONDERBOOM 4 Portable Waterproof Bluetooth Speaker with Big Bass and 360-Degree Sound, Dustproof Floating Speaker with 131ft (40m) Range - Gray
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Ultimate Ears Boom 4 Portable Waterproof Bluetooth Speaker with 360-Degree, Bold, Immersive, Crystal-Clear Sound, Floating Speaker with 15-Hour Battery and 147ft (45m) Range - Blue
Ultimate Ears Boom 4 Portable Waterproof Bluetooth Speaker with 360-Degree, Bold, Immersive, Crystal-Clear Sound, Floating Speaker with 15-Hour Battery and 147ft (45m) Range - Blue
 
Ultimate Ears WONDERBOOM Play Portable Waterproof Bluetooth Speaker, Dustproof Floating Speaker with 131ft (40m) Range, Black
Ultimate Ears WONDERBOOM Play Portable Waterproof Bluetooth Speaker, Dustproof Floating Speaker with 131ft (40m) Range, Black
 
Ultimate Ears EPICBOOM, Portable Wireless Bluetooth Speaker, Big Bass and Immersive, IP67 Waterproof, Floatable, 17 Hour Battery, 180 ft Range, USB C- Charcoal Black (Renewed)
Ultimate Ears EPICBOOM, Portable Wireless Bluetooth Speaker, Big Bass and Immersive, IP67 Waterproof, Floatable, 17 Hour Battery, 180 ft Range, USB C- Charcoal Black (Renewed)
 
Ultimate Ears MEGABOOM 3 Portable Wireless Bluetooth Speaker (Powerful Sound + Thundering Bass, Bluetooth, Magic Button, Waterproof, Battery 20 Hours) - Lagoon Blue (Renewed)
Ultimate Ears MEGABOOM 3 Portable Wireless Bluetooth Speaker (Powerful Sound + Thundering Bass, Bluetooth, Magic Button, Waterproof, Battery 20 Hours) - Lagoon Blue (Renewed)
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
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Added to Cart
Details
Added to Cart
Price-15% $127.60
List: $149.99		-25% $75.01
List: $99.99		$145.00-36% $58.00
List: $89.99		$169.99$101.99
Delivery
Get it as soon as Monday, Mar 24
Get it as soon as Monday, Mar 24
Get it as soon as Monday, Mar 24
Get it as soon as Monday, Mar 24
Get it as soon as Monday, Mar 24
Get it as soon as Monday, Mar 24
Customer Ratings
4.34.3 out of 5 stars291
4.64.6 out of 5 stars702
4.34.3 out of 5 stars291
4.64.6 out of 5 stars141
4.34.3 out of 5 stars9
4.44.4 out of 5 stars833
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What's in the box

  • Boom 4 Red

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    Ultimate Ears Boom 4 Portable Waterproof Bluetooth Speaker with 360-Degree, Bold, Immersive, Crystal-Clear Sound, Floating Speaker with 15-Hour Battery and 147ft (45m) Range 4 - Raspberry

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    Focus on sustainability

    boom 4 portable speaker
    icon

    Made With Recycled Plastic

    Plastic parts include a minimum of 52% post-consumer recycled plastic.

    *Excluding packaging

    icon

    Responsible Packaging

    The paper packaging of BOOM 4 is FSC certified. By choosing this product, you are supporting responsible management of the world’s forest.

    Product Description

    Grab the super-portable wireless Bluetooth speaker that’s built for adventure. Seriously waterproof with balanced 360-degree sound, deep bass, and one-touch music controls, the Ultimate Ears BOOM 4 is the ultimate go-anywhere speaker. Experience four different EQ modes or customize yourself. You can even pair the BOOM 4 Bluetooth waterproof speaker with MEGABOOM, EVERBOOM, EPICBOOM and HYPERBOOM portable Bluetooth speakers for more fun. The BOOM 4 is an extremely wireless speaker with 45 meters (147 feet) of range, so you can walk away and keep the tunes comin’. Long-press the Magic Button to access your playlists, or set up one-touch playlists on your favorite streaming platforms like Spotify, Amazon Music on Android,* and Apple Music on iOS. Ultimate sound. Made to wander.

    Sustainability features

    Sustainability features

    This product has sustainability features recognized by trusted certifications.

    Carbon impact

    Carbon emissions from the lifecycle of this product were measured, reduced and offset.

    As certified by
    Carbon Neutral Certified by SCS Global Services

    Focus on sustainability

    boom 4 portable speaker
    icon

    Made With Recycled Plastic

    Plastic parts include a minimum of 52% post-consumer recycled plastic.

    *Excluding packaging

    icon

    Responsible Packaging

    The paper packaging of BOOM 4 is FSC certified. By choosing this product, you are supporting responsible management of the world’s forest.

    Customer reviews

    4.3 out of 5 stars
    291 global ratings

    Review this product

    Share your thoughts with other customers
    Write a customer review

    Customers say

    Customers appreciate the speakers for their good sound quality, functionality, durability, and portability. They find the music amazing with plenty of bass and treble. The size is also appreciated as it's lightweight and easy to carry around. Many customers find the speakers great for traveling and working around the house. However, some customers have mixed opinions on connectivity and battery life.

    AI-generated from the text of customer reviews

    Select to learn more

    Sound qualityFunctionalityDurabilityPortablenessSizeValue for moneyConnectivityBattery life
    59 customers mention "Sound quality"42 positive17 negative

    Customers appreciate the speakers' sound quality. They find it has good bass and treble for its compact design. The speakers are easy to charge and connect to phones. Overall, customers consider them a worthwhile purchase.

    "...I like that it's smaller, less bulky and less weight. The sound in the hotel rooms I stay in is great." Read more

    "...They seriously disappointed. Not the Boom. It’s loud when I want it to be, sound resonates across the rooms, it has long battery life, can pair..." Read more

    "It's a great speaker if you're a podcast listener. Sound and quality are top notch. However it fails when it comes to music...." Read more

    "OUTSTANDING SPEAKER!!!!!!!!! It's such a great speaker for my house, and way better than" Read more

    11 customers mention "Functionality"8 positive3 negative

    Customers like the speakers' functionality. They mention good sound, easy use, and size.

    "We purchased one of these about six years ago for kayaking works beautifully when I saw it on the Amazon prime deals. I had to jump and get it...." Read more

    "Looked good and worked great," Read more

    "...Tried to factory reset it, but couldn't because it needs a functional vol- to do so. This supposedly tested device does not have one...." Read more

    "Great sound, easy to use, functionality, size." Read more

    8 customers mention "Durability"8 positive0 negative

    Customers appreciate the durability of the speakers. They say it's a solid product with a good reputation.

    "Such a quality speaker! We got this after our last one started to go after 10 years. So far the new one has been great!" Read more

    "Sound is very nice. Good base. The app has an equaliser. Surround sound. Recommend. Can use inside or out." Read more

    "This speaker looks and feels like great quality and sounds great if you crank it up but at lower volume (think dinner music) it’s hollow and lacks..." Read more

    "more durable and complex sound than the flip. even better now with usb-c as opposed to micro-usb on the predecessor" Read more

    8 customers mention "Portableness"8 positive0 negative

    Customers appreciate the speakers' portability. They find them lightweight and compact, making them easy to carry around and use for small outdoor events. The speakers provide clear audio and are suitable for traveling and working around the house.

    "...I like that it's smaller, less bulky and less weight. The sound in the hotel rooms I stay in is great." Read more

    "Best portable speaker I’ve used! I’ve purchased two of the established name brands and an off brand in portable speakers...." Read more

    "Great clear audio and highly portable" Read more

    "I use this speaker all the time. It's great to bring around with me when I'm working around the house. I got a second one to pair them together...." Read more

    8 customers mention "Size"8 positive0 negative

    Customers like the compact design of the speakers. They find them suitable for small spaces like offices and bedrooms, with a lightweight and easy-to-use design.

    "...I like that it's smaller, less bulky and less weight. The sound in the hotel rooms I stay in is great." Read more

    "When the speaker works, it is pretty good for the overall size...." Read more

    "...I think this speaker is good for a small office or bedroom, and it is small and light enough to be carried around and used for small outdoor..." Read more

    "...Boo. Doesn't take much space on my desk and is quite easy to use. Love this color!" Read more

    7 customers mention "Value for money"7 positive0 negative

    Customers appreciate the speakers' value for money. They say they're a good buy and provide quality sound for the price.

    "Sounds great, with a competative price. Will be perfect to my back yard barbecues." Read more

    "...Battery life is great so far. The money spent i believe was well worth it. It connected easily to my phone. Definitely recommend!!" Read more

    "Quality sound for the price" Read more

    "Best for the price..." Read more

    11 customers mention "Connectivity"7 positive4 negative

    Customers have different experiences with the speakers' connectivity. Some say it pairs easily to their phones and can connect multiple speakers. Others report issues like poor connectivity, charging cable issues, and problems with the charging cable not staying connected.

    "...sound resonates across the rooms, it has long battery life, can pair to its playmates, and I love the control using the app. Superior" Read more

    "I wanted to use these speakers with my iPad, but I am unable to pair them with them for a stereo pair." Read more

    "...I had to jump and get it. These can be hooked up in stereo so I have one in the basement and one upstairs so when I’m doing laundry, I don’t lose my..." Read more

    "...The money spent i believe was well worth it. It connected easily to my phone. Definitely recommend!!" Read more

    7 customers mention "Battery life"3 positive4 negative

    Customers have different views on the battery life of the speakers. Some say it has a long-lasting battery and pairs well with other devices, while others mention it's durable but not the best.

    "...At full volume, the battery will be completely dead in 4 hours. At 3/4 volume it will be dead in 5 hours...." Read more

    "...when I want it to be, sound resonates across the rooms, it has long battery life, can pair to its playmates, and I love the control using the app...." Read more

    "Sound quality is good. Durable speaker, but battery life is not the best." Read more

    "...I got a second one to pair them together. The battery lasts a long time, it's easy to charge, and, as an audiophile that is constantly listening to..." Read more

    Sounds excellent!
    5 out of 5 stars
    Sounds excellent!
    I use this speaker all the time. It's great to bring around with me when I'm working around the house. I got a second one to pair them together. The battery lasts a long time, it's easy to charge, and, as an audiophile that is constantly listening to music, I love that I can take this outside while I garden or have it in my bathroom or do anything, really.
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    Top reviews from the United States

    • C. Duncan
      5.0 out of 5 stars Great sound, good for traveling
      Reviewed in the United States on February 28, 2025
      Color: BlueVerified Purchase
      I replaced my older MegaBoom with this smaller unit for travel. I like that it's smaller, less bulky and less weight. The sound in the hotel rooms I stay in is great.
      Helpful
       Report
    • SJ Marion
      5.0 out of 5 stars Best for the price
      Reviewed in the United States on January 15, 2025
      Color: RedVerified Purchase
      Best portable speaker I’ve used! I’ve purchased two of the established name brands and an off brand in portable speakers. They seriously disappointed.
      Not the Boom. It’s loud when I want it to be, sound resonates across the rooms, it has long battery life, can pair to its playmates, and I love the control using the app. Superior
      One person found this helpful
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    • Amazon Customer
      5.0 out of 5 stars Awesome speaker
      Reviewed in the United States on February 24, 2025
      Color: BlueVerified Purchase
      Such a quality speaker! We got this after our last one started to go after 10 years. So far the new one has been great!
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    • Daniel D
      4.0 out of 5 stars It's a great speaker, but...
      Reviewed in the United States on September 19, 2024
      Color: BlackVerified Purchase
      It's a great speaker if you're a podcast listener. Sound and quality are top notch. However it fails when it comes to music. There is absolutely no bass. If you're like me when it comes to music, buy a bose.
      11 people found this helpful
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    • D'Anna Watson
      5.0 out of 5 stars Outstanding
      Reviewed in the United States on March 6, 2025
      Color: BlackVerified Purchase
      OUTSTANDING SPEAKER!!!!!!!!! It's such a great speaker for my house, and way better than
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    • Jim Molnar
      3.0 out of 5 stars Decent Speaker - Weak Connectivity
      Reviewed in the United States on January 7, 2025
      Color: BlackVerified Purchase
      When the speaker works, it is pretty good for the overall size. It has issues with interference while playing music which is amplified when you connect another speaker via the app.
      One person found this helpful
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    • Tara Wegling (leslie)
      5.0 out of 5 stars Excellent
      Reviewed in the United States on February 3, 2025
      Color: BlackVerified Purchase
      We purchased one of these about six years ago for kayaking works beautifully when I saw it on the Amazon prime deals. I had to jump and get it. These can be hooked up in stereo so I have one in the basement and one upstairs so when I’m doing laundry, I don’t lose my music
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    • Chris Ligi
      1.0 out of 5 stars Junk
      Reviewed in the United States on August 1, 2024
      Color: BlackVerified Purchase
      The sound quality is ok, because it is not very loud. At full volume, the battery will be completely dead in 4 hours. At 3/4 volume it will be dead in 5 hours. It doesn’t charge while plugged into a usb automobile cigarette lighter.
      I bought the mega boom 3, it was certified refurbished, I wasn’t paying attention, a co worker sent me the link, 3 songs , the speaker was rattling, and by the time I got home from work, it was filled with water.
      I am a city letter carrier in Vegas, I am outside at least 7 hours a day, and just from leaving a cooling towel on the already rattling speaker, it managed to fill this waterproof speaker with a cup of water, and it never worked again.
      So whether it’s new or refurbished, I can honestly say that Ultimate Ears Boom4 and mega boom 3 are crap.
      I had a $28 dollar JBL, that was as loud, and took 2years to blow out the speaker.
      I am assuming the megaboom4 is no better.
      10 people found this helpful
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    Top reviews from other countries

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    • Jorge Lara
      5.0 out of 5 stars Excelente
      Reviewed in Mexico on December 1, 2024
      Color: BlackVerified Purchase
      Me gustó mucho, es sencilla de utilizar, sonido aceptable para la fiesta, no esperes sonido Hi end.
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    • Craig
      5.0 out of 5 stars Great sound and easy to pair.
      Reviewed in Canada on January 2, 2025
      Color: BlackVerified Purchase
      Great product
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    • Sai Bhanu Teja
      5.0 out of 5 stars Everything you need
      Reviewed in Canada on December 24, 2024
      Color: BlueVerified Purchase
      Fan of Ultimate ears. This Boom 4 is super good for a bed room speaker. The quality is good, the clarity us crisp and the bass is noticeable. 5/5 product.
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    • Amazon Customer
      5.0 out of 5 stars Boom 4
      Reviewed in Canada on January 10, 2025
      Color: BlackVerified Purchase
      Great sound from this little portable speaker! Super easy to use…if I can do it anyone can!
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    • GCBB78
      5.0 out of 5 stars Amazing
      Reviewed in Canada on January 23, 2025
      Color: BlackVerified Purchase
      Great sound, perfect for golf or just sitting around. Highly recommended! Will not be disappointed!!
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