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expiredphoinix | Staff posted May 28, 2026 2:50 AM

Ultimate Ears WONDERBOOM 4 Waterproof Bluetooth Outdoor Speaker (Blue)

$51

$100

49% off
+ Free S&Hat Amazon
96 Comments
42.9K Views
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Deal Details
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

Community Voting

Deal Score
+246
Good Deal
Visit Amazon

Top Comments

WittyGoat5368
24Comments
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
201Comments
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
111Comments
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

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97 Comments

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May 28, 2026 1:11 PM
201 Comments
Joined Feb 2007
PastaJawnMay 28, 2026 1:11 PM
201 Comments

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

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.
3
2
May 28, 2026 1:12 PM
396 Comments
Joined Apr 2012
kneeldugMay 28, 2026 1:12 PM
396 Comments
This has amazing sound for a small mid sized room. It's crisp and clear for use in a music class...way clearer than an old JBL.
1
May 28, 2026 4:04 PM
1.4K Comments
Joined Nov 2007

This comment has been rated as unhelpful by Slickdeals users.

May 28, 2026 4:07 PM
926 Comments
Joined Feb 2018
forcesMay 28, 2026 4:07 PM
926 Comments
Does it sound better than Amazon Echo speakers? They worth the same price
1
May 28, 2026 4:22 PM
24 Comments
Joined Nov 2022
IslandiaMay 28, 2026 4:22 PM
24 Comments

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

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!
5
3
May 28, 2026 4:28 PM
1.2K Comments
Joined Feb 2017
theshopper2022May 28, 2026 4:28 PM
1.2K Comments
Great speaker for its size. The other ones are just a tad too heavy or big to lug around. My MIL uses it for dance classes and it is enough sound for the studio. These are old people so they don't need it superloud.
2
Pro
May 28, 2026 4:34 PM
1.4K Comments
Joined Jun 2024
TheCosmoKramer
Pro
May 28, 2026 4:34 PM
1.4K Comments
Quote from forces :
Does it sound better than Amazon Echo speakers? They worth the same price
Overall sound will be much better than an Echo.
1

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May 28, 2026 4:37 PM
111 Comments
Joined Mar 2018
jasonw2714May 28, 2026 4:37 PM
111 Comments

Our community has rated this post as helpful. If you agree, why not thank jasonw2714

I have three of these. They're easy enough for my wife and kids to figure out without having to set them up. Not to brag, but I got all of them for free (Uline freebies)
3
1
May 28, 2026 4:38 PM
43 Comments
Joined Apr 2013
david.n.wangMay 28, 2026 4:38 PM
43 Comments
Great price. Have been loyal to UE for quite some time
1
May 28, 2026 4:40 PM
2K Comments
Joined Dec 2005
hierolerMay 28, 2026 4:40 PM
2K Comments
I've had an older version (WB2) since 2021, it's OK. The sound isn't the best in the world but its loud enough to put at a picnic table and get some tunes. I don't know if they have corrected it but the most annoying thing about it is that when you turn it on or off it makes this loud sound like something is zooming in or out that you can't adjust or remove. This price is pretty good as it looks like I paid more for it back in 2021. But given the improvements in technology and how portable speakers are cheaper than before I'd probably get a smaller one for cheaper in retrospect.
Last edited by hieroler May 28, 2026 at 09:43 AM.
May 28, 2026 4:57 PM
2.7K Comments
Joined Jun 2016
phrodiniMay 28, 2026 4:57 PM
2.7K Comments
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.
2
May 28, 2026 6:06 PM
310 Comments
Joined Jun 2003

This comment has been rated as unhelpful by Slickdeals users.

May 28, 2026 6:57 PM
14 Comments
Joined Nov 2013
ArashNMay 28, 2026 6:57 PM
14 Comments
will this be loud enough for my car? I connect it to my phone! (stereo died and i rather not spend 400 on installing a new one!)
1
2
May 28, 2026 8:08 PM
23 Comments
Joined Sep 2025
CheapskateNateMay 28, 2026 8:08 PM
23 Comments
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.

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May 28, 2026 9:04 PM
276 Comments
Joined Sep 2016
travmo.May 28, 2026 9:04 PM
276 Comments

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

Quote from jasonw2714 :
I have three of these. They're easy enough for my wife and kids to figure out without having to set them up. Not to brag, but I got all of them for free (Uline freebies)
Free is a stretch considering you had to spend $1,500 or more to get it
2

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