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Ultimate Ears

Ultimate Ears WONDERBOOM 4 Portable Waterproof Bluetooth Speaker with Balanced 360-Degree Sound and Bass, Dustproof Floating Speaker with 131ft (40m) Range- Black

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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, Jun 16
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Color: Black


Features

  • Balanced 360-Degree Sound: The WONDERBOOM 4 portable waterproof Bluetooth speaker features 360-degree sound in a petite package; boosted sound for up to 14 hours of playtime
  • Outdoor Boost and Podcast Mode: Engineered for full stereo sound; tap the Outdoor Boost button for outdoor environments; use the new Podcast Mode to make vocals sound rich and clear
  • 14 Hours of Boom: With a rechargeable battery that lasts throughout the day, this waterproof portable speaker booms on with up to 14 hours of playtime, so you can soak up every moment; Charging via USB-C cable (not included)
  • Waterproof, Dustproof, and Floatable: IP67-rated this Bluetooth waterproof speaker can be submerged in 1m of water for 30 min; protected from dust; ideal for the pool, beach, or shower
  • Double Up for Stereo: Pair up two WONDERBOOM 4 portable Bluetooth speakers for even bigger sound; press once to double up; press again for true stereo from both speakers, with left and right channels (not compatible with PartyUP)
  • Durable Wireless Speaker With Range: 131 feet (40 meters) of range so youre free to roam; plus its dirt-resistant and drop-proof (1) with a handy loop so you can take it with you
  • Made With Recycled Plastic: Plastic parts in the WONDERBOOM 4 wireless Bluetooth speaker include a minimum of 31% post-consumer recycled plastic by weight
  • (1) Drop-tested from 5 ft / 1.5 m

Description

The Ultimate Ears WONDERBOOM 4 Portable Waterproof Bluetooth Speaker is a floating Bluetooth speaker that is ultra portable with surprisingly bigger, 360-degree sound. It’s crisp, bassy, and ready to go with 14 hours of boom. The IP67 rating means this wireless bluetooth speaker is waterproof, dustproof, and floats. Take it to the pool, the beach, or use it as a bluetooth speaker for shower. Experience amazing sound—wherever life takes you with these wireless speakers with bluetooth. Suitable for outdoor adventures, this speakers bluetooth wireless features make for a loud bluetooth speaker. Whether as portable speakers for outdoor or for indoor use, this bluetooth speaker is a practical choice. Great for those on the go, enjoy wireless speakers that deliver powerful sound in any setting.

Brand: Ultimate Ears


Speaker Maximum Output Power: 10 Watts


Frequency Response: 75 Hz


Connectivity Technology: Bluetooth


Audio Output Mode: Stereo


Audio Output Mode: Stereo


Mounting Type: Freestanding


Enclosure Material: Plastic


Speaker Type: Outdoor


Additional Features: Dustproof, Lightweight, Portable, Shockproof, Waterproof


Antenna Location: For Computers, For Smartphones or Tablets


Color: Black


Is Waterproof: True


Warranty Type: Limited


Maximum Range: 131 Feet


Control Method: Touch


Speaker Size: 40 Millimeters


Tweeter Diameter: 0.75 Inches


Water Resistance Level: Waterproof


Bluetooth Range: 40 Meters


Specific Uses For Product: Gaming, Party, Travel


MP3 player: No


Battery Average Life: 14 Hours


Controller Type: Battery Powered


Unit Count: 1.0 Count


Item Dimensions D x W x H: 4"D x 4"W x 8"H


Item Weight: 1.2 Pounds


Compatible Devices: Desktop, Laptop, Smartphone, Tablet, Television


Power Source: Battery Powered


Number of Batteries: 1 Lithium Polymer batteries required.


Brand: Ultimate Ears


Model Number: 984-001876


Model Name: Wonderboom 4


Built-In Media: Wonderboom 4 Black


Warranty Description: 1 Year Limited Hardware Warranty


Number of Items: 1


Series Number: 4


UPC: 097855189943


Global Trade Identification Number: 43


Manufacturer: Logitech


Age Range Description: Teen and Adult


Speaker Maximum Output Power: 10 Watts


Frequency Response: 75 Hz


Number of Audio Channels: 4 2


Connectivity Technology: Bluetooth


Wireless Technology: Bluetooth


Subwoofer Connectivity Technology: Wireless


Connectivity Protocol: Bluetooth


Battery Capacity: 14 Milliamp Hours


Audio Driver Type: Dynamic Driver


Audio Driver Size: 40 Millimeters


Number Of Circuits: 1


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jun 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great little portable speaker
Color: Black
It's easy to pack around and has pretty good sound for such a little guy. Primary uses are music and audiobooks and the sound quality good enough that I'm satisfied. It's not Bose, but it sure ain't bad. I use it in the shop, out by the pool and when I'm gardening. Outdoors the sound travels a bit better if there is a wall or something solid behind the speaker. The loop makes it easy to carry or hang up and the 360⁰ sound means less fussing around with location and direction. Connected to my Android, playing on Spotify, I can crank it all the way up with no distortion or crackling. But, I only did that this one time, so I could note it in the review. It's pretty freaking loud. It's solid with a rubber cap on both the top and bottom. In case of a drop, those could be lifesavers. I've never tossed it in the water, so cannot attest to it's water resistance. It connects quickly and easily to any Bluetooth device and the buttons on top provide easy access to pairing, pause and power. It will power down if left unused for a few minutes to preserve the battery. That's a nice function. I'm not wild about the HUGE volume controls on the front. I think they're ugly and detract greatly from the overall appearance of the speaker. Overall, good value for the money. ... show more
Reviewed in the United States on March 22, 2026 by Kate S
    • Worth the money! Worth the money!
Color: Pink
Review Image by Azure
Review Image by Azure
Review Image by Azure
I love how simple & easy it was to get my speaker and how easy it was to setup. The sound quality is amazing! I also love the versatility of standard mode and outdoor mode. This speaker connects very easily to my devices. I also feel like its worth the money!
Reviewed in the United States on June 5, 2026 Reviewed in the United States on June 5, 2026 by Azure
    • Big Sound, Small Package
Color: Blue
The Ultimate Ears Wonderboom 4 is a compact bluetooth speaker you can fit in the palm of your hand, but don't let its size fool you -- this thing pumps out loud, clear 360° sound with satisfyingly thumpy bass and greats mids and highs. It's sturdy, waterproof, has a forgivingly long wireless range, and it even floats in water, making it perfect for any situation from camping trips to pool parties, or just casual listening. I like that Ultimate Ears chose a simplistic look with bold colors for these speakers, and the silicone base helps ensure that they stay put. My only gripe is that the Outdoor and Podcast EQs kind of sacrifice some clarity to push the volume in their respective directions, but the standard EQ is so rich and the speaker is so outspoken that either problem these modes attempt to solve are really non-issues, and the fact you can pair up two of these speakers for full two-channel stereo is a big plus. In addition, the regular sound signature is so clear that you can crank the volume with no noticeable distortion. I also wish you could skip back a track with the onboard controls, but doing it on your device isn't that much of a hassle. For this price range and size, I'd say the Wonderboom 4 should be your first choice for a portable bluetooth speaker. ... show more
Reviewed in the United States on July 14, 2025 by F. Leone
    • Audio Perfection
Color: Pink
These speakers are friggin awesome. Got one for each of my parents for their birthdays this year. The audio is crystal clear and it also gets very loud for its size without compromising the audio quality. Great for both music and podcasts etc. Also love that you can attach a carabineer to the speaker so you can hook it onto your pants or backpack etc and have the speaker effortlessly follow you around. The different settings/features are also really cool and handy. Would definitely recommend this product and honestly any product from the Ultimate Ears speaker line as in my personal opinion this line of speakers is the best line of portable speakers I know of or have ever heard. They're priced well too. I mean they aren't super cheap but they aren't overly expensive either, it's kinda right in that sweet spot. If you've got the money and you're looking for a portable speaker, look no further than this line because the sound quality and loudness (without distortion) you really won't find anywhere else especially for these prices. I know I'm starting to sound like a UE shill at this point lol but honestly I just really do love and admire their speakers and don't think they get the credit they deserve. Anyway hope this helps! ... show more
Reviewed in the United States on January 17, 2026 by Dgiberkeley
    • Worth it! Little speaker with Power!
Color: Blue
Small but mighty speaker!!! Bought for a small beach party. Read the reviews and they are not lying. Little bean(as we are calling it) bumps! Clear acoustics, bass isn’t choppy. Great purchase!
Reviewed in the United States on June 3, 2026 by melissa
    • GREAT BUT BATTERY RECHARGING IS RIDICULOUS
Color: Pink
Overall this thing is super. Great sound, easy to pair & use, tremendous volume & decent battery life. The one unbelievable idiotic feature is battery charging. There's no light or sound to tell you ACCURATELY how full the battery currently is. If you press a button it will say "Normal Battery Level Enjoy The Music" when the stupid thing is somewhere between 36% & 100%. Are you kidding me? 36% is barely 1/3 full & there's nothing to indicate if it's actually 40%, 57%, 84% or 100%. What kind of engineer came up with this & how did it possibly get all the way into production with no one saying, "this is the dumbest thing we've ever made". I had a rechargeable speaker for my 2nd Gen iPod in 2002 with 4 little red lights, 1 light meant 25% charged, 2 lights 50% & so on. Simple, clear & easy, didn't need to talk to tell me absolutely nothing. So now 24 years later & these rocket surgeons can't pull this off with all the advancements in tech over the last 2 decades? ... show more
Reviewed in the United States on February 27, 2026 by John P.
    • This Speaker Is Possessed by a Much Larger, Angrier Speaker
Color: Black
The Ultimate Ears WONDERBOOM 4 is built like a friendly little bean and sounds like it does CrossFit and drinks black coffee for fun. I turned it on and my house said, “Oh. We’re doing this now.” The bass showed up uninvited and started rearranging the furniture emotionally. The 360-degree sound is real. I walked in a circle around it like an idiot and the music followed me like a curse. I put it in the shower. Loud. I put it by the pool. Louder. I dropped it in the pool. It floated. Still yelling. I walked away from my phone. Then I walked farther. Then I forgot where my phone was. Music never stopped. This speaker is loyal to a fault and clearly doesn’t respect personal space. Battery lasts forever. Pairing takes half a second. Survives water, dust, and my playlist decisions. Five stars. If this thing gets any louder it’s going to start paying rent. ... show more
Reviewed in the United States on February 7, 2026 by 1Bama1
    • Grate sounds, stylish, and compact
Color: Black
I really like the sound quality, the stylish design, and how compact it is. The speaker is easy to carry and perfect for everyday use.
Reviewed in the United States on April 29, 2026 by Svitlana Lazarieva

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