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phoinix | Staff 49.7K Views
May 28, 2026 2:50 AM

Ultimate Ears WONDERBOOM 4 Waterproof Bluetooth Outdoor Speaker (Blue)

$51

$100

49% off
+ Free S&Hat Amazon
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Update: This extremely popular front page deal is still available.

Amazon has Ultimate Ears WONDERBOOM 4 Portable Waterproof Bluetooth Speaker (Blue) on sale for $51.44. Shipping is free.

Thanks to Deal Hunter phoinix for finding this deal.

About this product:
  • 360-degree balanced sound with boosted outdoor audio and podcast mode
  • IP67 waterproof rating floats in 1m water for 30 minutes
  • 14 hours playtime via USB-C charging cable
  • 131' wireless range with drop resistance from 5'
  • 31% post-consumer recycled plastic in construction

Editor's Notes

Written by jimmytx | Staff
  • About this Store:
  • Additional Information:
    • This price is $8.55 lower than the previous Frontpage deal.
    • Our research indicates that this offer is $18.55 lower (26% savings) than the next best available price from a reputable merchant with prices starting from $69.99
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by phoinix | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This extremely popular front page deal is still available.

Amazon has Ultimate Ears WONDERBOOM 4 Portable Waterproof Bluetooth Speaker (Blue) on sale for $51.44. Shipping is free.

Thanks to Deal Hunter phoinix for finding this deal.

About this product:
  • 360-degree balanced sound with boosted outdoor audio and podcast mode
  • IP67 waterproof rating floats in 1m water for 30 minutes
  • 14 hours playtime via USB-C charging cable
  • 131' wireless range with drop resistance from 5'
  • 31% post-consumer recycled plastic in construction

Editor's Notes

Written by jimmytx | Staff
  • About this Store:
  • Additional Information:
    • This price is $8.55 lower than the previous Frontpage deal.
    • Our research indicates that this offer is $18.55 lower (26% savings) than the next best available price from a reputable merchant with prices starting from $69.99
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by phoinix | Staff

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Top Comments

WittyGoat5368
29Comments
14Reputation
Unlike a couple of others who posted positive experience with this item, my experience was pretty bad. It worked fine for a few weeks. Then, inexplicably, it started making a repetitive droning sound, sort of like an engine hiccuping (dzhuh, dzhuh, dzhuh, dzhuh, dzhuh, etc.). It would not turn off and the volume buttons didn't work. I could find no reset pin (nor any reset instructions in the very sparse "documentation" included with the speaker). So, I returned it. For a day and a half, until I could get a chance to return it, it constantly made this annoying sound - I repackaged it and had to put it in the oven in order to minimize the sound!
Go to Comment
soccerjonl
202Comments
42Reputation
This is my speaker of choice. Waterproof is a bonus. It's not enough for a full outdoor party environment, but it is definitely able to fill a room with quality sound while being the size of a softball. It has long battery life.
Go to Comment
jasonw2714
114Comments
43Reputation
I personally would never buy anything from Uline, but when I'm doing the ordering for the company that does need supplies, well then, it's free for me.
Go to Comment

Community Reviews

The Wonderboom 4 is a compact waterproof Bluetooth speaker that stands out for portability, solid build, and easy outdoor or shower use. It can fill a room or small studio with clear, crisp sound, and the battery life is described as strong. Pairing two units for stereo and the USB C upgrade add convenience, and the floating design is a useful bonus. The main tradeoffs are limited bass, occasional connection or reliability complaints, and a price that has often been seen much lower elsewhere. A handy small speaker if you value toughness and size over deep bass.

  • The speaker supports pairing two units for stereo playback, which can improve outdoor audibility.

    psuvetteNothingBagel

  • The Wonderboom 4 can fill a room with quality sound while staying very portable.

    soccerjonl

  • The speaker delivers crisp, clear audio that works well for music class use.

    kneeldug

  • The Wonderboom 4 can float and handle moderate abuse, which supports poolside and outdoor use.

    Jabberwockish

  • The sound may be less musical and punchy than larger bass-focused speakers, especially for listeners wanting strong bass.

    Buckeyefan 1fishyx

  • The speaker can develop a repetitive droning sound and may not turn off or respond to volume buttons.

    WittyGoat5368

  • The Wonderboom 4 can have connection issues that cause skipping with certain phones despite normal pairing elsewhere.

    Ryan2010

  • The power on or off can trigger an unadjustable loud zooming sound that some users find annoying.

    hieroler

Common Questions (5)

AI-generated summary based on comments from the community. Updated ago

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97 Comments

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May 30, 2026 9:50 AM
19 Comments
Joined Nov 2013
mrasmusMay 30, 2026 9:50 AM
19 Comments
I'm looking to replace an old UE Roll 2 that's finally losing its battery life to a sufficiently annoying degree; thing's been a workhorse for ages for me. Sound quality and volume were decent enough (nothing spectacular, but I don't expect that much from a waterproof speaker), and it ended up shifting to shower radio duties for the last several years, which it's been doing well enough at. I'm looking forward to needing to charge way less often, and with a USB-C cable as well. May use it for some travel uses as well; seems small enough, if the volume's right.
May 30, 2026 1:54 PM
1K Comments
Joined Jul 2005
psuvetteMay 30, 2026 1:54 PM
1K Comments
I have this. I don't have other Bluetooth speakers to compare it to, but it sounds good and feels solid. I think you can pair two for stereo too.
May 30, 2026 1:55 PM
1K Comments
Joined Jul 2005
psuvetteMay 30, 2026 1:55 PM
1K Comments
Quote from fishyx View quoted comment :
Yup, I grabbed a blue one for $29.00 the other day.
New model coming?
May 30, 2026 2:37 PM
9 Comments
Joined Jun 2018
TwoSpoonsMay 30, 2026 2:37 PM
9 Comments
I have the UE Boom 2. Waterproof so I took it kayaking, beach, and pool often. It's so old that a full charge doesn't last long, but the sound is still as good as day one. Would buy from this brand again.
May 30, 2026 2:48 PM
947 Comments
Joined Nov 2013
Raistlin1May 30, 2026 2:48 PM
947 Comments
This brand or JBL portable speaker?
May 30, 2026 3:49 PM
279 Comments
Joined Nov 2010
BoyWonderMay 30, 2026 3:49 PM
279 Comments
Quote from phrodini View quoted comment :
I heard someone playing music on one of these. The sound quality was okay, made me think the high price is from brand and certain convenient features, but still overpriced. I've heard better more sound focused speakers from other companies for half the price.
Would like to know more about the speakers that are half the price. Can you share more info? Thanks
May 30, 2026 5:03 PM
196 Comments
Joined Nov 2024
WittyKestrel5359May 30, 2026 5:03 PM
196 Comments
Quote from Raistlin1 View quoted comment :
This brand or JBL portable speaker?
Both comparable, but imho Jbl has the lock on "bass"

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May 30, 2026 5:05 PM
1.7K Comments
Joined Apr 2009
atarilynxMay 30, 2026 5:05 PM
1.7K Comments
Quote from CheapskateNate View quoted comment :
I found the WB4 to be pretty mediocre and returned it. At this price, I'd recommend either the Tribit Stormbox Micro 2 or the Earfun Uboom L, both of which can be had for ~$50.

www.speakerranking.com has the Wonderbooms ranked around 80th for medium sized BT speakers.
I agree with this recommendation. But I personally recommend the Tribit Stormbox Micro 3 in place of the 2. The two is a solid speaker but the SB Micro 3 is better in different ways. And the magnetic feet are super useful.
I own or have owned probably 30 different types of Bluetooth speakers. (UE, Sony, Bose, Tribit, Boomcore, Philips, Soundcore, among others). I owned UE speakers years ago. Great, but they lost me by holding onto USB micro too long. But there also are great quality speakers from other brands available now for less that offer more features and value .
2
May 30, 2026 5:07 PM
1.7K Comments
Joined Apr 2009
atarilynxMay 30, 2026 5:07 PM
1.7K Comments
Quote from mrasmus View quoted comment :
I'm looking to replace an old UE Roll 2 that's finally losing its battery life to a sufficiently annoying degree; thing's been a workhorse for ages for me. Sound quality and volume were decent enough (nothing spectacular, but I don't expect that much from a waterproof speaker), and it ended up shifting to shower radio duties for the last several years, which it's been doing well enough at. I'm looking forward to needing to charge way less often, and with a USB-C cable as well. May use it for some travel uses as well; seems small enough, if the volume's right.
The UE Roll 2 was a great speaker... My favorite from UE. Check out the Tribit SB Micro 3. It's my current favorite speaker at that form factor (and get two for TWS.. Loved doing that with my UE Roll 2)
May 30, 2026 6:47 PM
28 Comments
Joined Sep 2025
CheapskateNateMay 30, 2026 6:47 PM
28 Comments
Quote from atarilynx View quoted comment :
I agree with this recommendation. But I personally recommend the Tribit Stormbox Micro 3 in place of the 2. The two is a solid speaker but the SB Micro 3 is better in different ways. And the magnetic feet are super useful.
I own or have owned probably 30 different types of Bluetooth speakers. (UE, Sony, Bose, Tribit, Boomcore, Philips, Soundcore, among others). I owned UE speakers years ago. Great, but they lost me by holding onto USB micro too long. But there also are great quality speakers from other brands available now for less that offer more features and value .
Oh good call, I didn't know the Micro 3 existed but now I want one. It's a shame it seems like TWS pairing doesn't work between the generations, I certainly don't need another small BT speaker but I could probably justify it easier if I could pair it with my 2.
May 30, 2026 7:47 PM
2 Comments
Joined May 2020
CrimsonHarrier645May 30, 2026 7:47 PM
2 Comments
Quote from mrasmus View quoted comment :
I'm looking to replace an old UE Roll 2 that's finally losing its battery life to a sufficiently annoying degree; thing's been a workhorse for ages for me. Sound quality and volume were decent enough (nothing spectacular, but I don't expect that much from a waterproof speaker), and it ended up shifting to shower radio duties for the last several years, which it's been doing well enough at. I'm looking forward to needing to charge way less often, and with a USB-C cable as well. May use it for some travel uses as well; seems small enough, if the volume's right.
In the same boat here. Been using the same ue roll since 2018. Use it as a desktop speaker. I need to charge this thing almost everyday. Def in for one
May 30, 2026 10:04 PM
89 Comments
Joined Nov 2019
slicker66May 30, 2026 10:04 PM
89 Comments
Nice find
1
May 30, 2026 11:02 PM
13 Comments
Joined Dec 2017
dxloMay 30, 2026 11:02 PM
13 Comments
I love this thing. Tempted to get a second one at this price to try the stereo pairing.
1
May 31, 2026 5:07 AM
112 Comments
Joined Dec 2007
mayursbMay 31, 2026 5:07 AM
112 Comments
Good deal..in for 1
1

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May 31, 2026 9:37 AM
21.8K Comments
Joined Nov 2007
Buckeyefan 1May 31, 2026 9:37 AM
21.8K Comments

Our community has rated this post as helpful. If you agree, why not thank

Bought 2 of these around the holidays from Sam's Club. The battery life is very good, as is the pairing. The volume is better than average for the size, which is a little larger than a baseball. The sound favors midrange with rolled off bass and highs. Great for voice, but not as musical/punchy as a Sony, JBL, or Marshall. Which is expected for the can like design and front/rear facing drivers. That also affects any stereo imaging vs a dual speaker, front facing design. Well built. It's with us now in Florida at Epic Universe. Nice travel size.
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