Customer Ratings & Reviews
See more imagesUltimate 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:
Customer reviews
Top Mentions
- Rated 5 out of 5 stars
Tiny but mighty
Kristin Posted
I absolutely love this portable speaker! It’s great and easy to travel with, it doesn’t take up space and the battery life is perfect on it. I have a 1B1B apartment and the sound fills up the entire space. I also use the speaker at the pool and beach it gives plenty of sound and bass!! It also comes with a charger so you don’t have to purchase one. Best purchase ever!
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Joyous Brights
Brand response from Logitech
Posted
We’re really grateful for your thoughtful review. It’s wonderful to know that our product is delivering the performance and ease of use you were hoping for. Hearing from satisfied users like you keeps us motivated. Thanks for choosing Logitech!
- Rated 5 out of 5 stars
Great for laying in bed, listening to tunes.
John Posted
I love this little device. I can pair it with my phone, tv, ipad with ease and listen to music or shows. It has a long battery life and sounds good. My only cons are it would be better if it said what percentage the battery life is at instead of just saying normal battery level. That and the normal sound mode has a little too much bass.
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black
Brand response from Logitech
Posted
We’re so pleased to hear that you’re enjoying your Logitech device. Your feedback is a big part of what helps us grow and continue to serve our users better. Thank you for choosing Logitech and for being part of our journey.
- Rated 5 out of 5 stars
Compact and good sound
RobinP Posted
Easy to pair. Good sounds. Compact. Controls are easy to find. Mine do not come with a charging cord but I have a dozen so that was not an issue. I use this to boost my TV speakers while doing treadmill workouts. I place this in the water holder and it prevents blasting out the house.
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black
Brand response from Logitech
Posted
We’re thrilled to know you’re satisfied with your Ultimate Ears WONDERBOOM 4 Wireless Speaker. Your input helps us shape better experiences for everyone. Thanks for your continued support!
- Rated 5 out of 5 stars
Great speaker
JerryMc Posted
My Son loves this speaker. It connects easily, sounds great, is waterproof and even floats.
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black
Brand response from Logitech
Posted
Thank you for your feedback! We’re delighted the Ultimate Ears WONDERBOOM 4 has been a hit with your son, offering great sound, easy connectivity, and fun waterproof design.
- Rated 5 out of 5 stars
Awesome
JerryMc Posted
My daughter loves this speaker. It connects easily, sounds great, and is waterproof.
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Hyper Pink
Brand response from Logitech
Posted
Thank you for your wonderful feedback! We’re so glad your daughter is enjoying the WONDERBOOM 4, and we appreciate you highlighting its easy connectivity, great sound, and waterproof design.
- Rated 5 out of 5 stars
Perfect
cns1990 Posted
Excellent sound. The size is perfect and the price feels worth it. Very happy with this little but powerful speaker.
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Sand Beige
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.
- Rated 5 out of 5 stars
review
SeanM Posted
great sound quality and battery life I used it all the time
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Sand Beige
Brand response from Logitech
Posted
Thanks for letting us know how things are going. We’re happy the product is performing as expected. Your support means everything.
- Rated 5 out of 5 stars
Best little speaker for your buck!
ZohnC Posted
The Sound quality alone. & the way this speaker adjust to the environment your in. hands down 1000/10. The sound that comes from this little speaker is elite. I’ve always loved the ultimate ear products. All the way down to the earbuds. Which I wish they didn’t discontinue: I would give this 100 stars if I could!. Hands down best bang for your buck. 10/10 recommend!
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black
Brand response from Logitech
Posted
It’s wonderful to hear that our product is meeting your needs. Your feedback is incredibly valuable and helps us continue to innovate. Thanks for being part of the Logitech community.
- Rated 5 out of 5 stars
Wonderboom
SharifW Posted
Great for the price, Loud, efficient and long battery life.
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Joyous Brights
Brand response from Logitech
Posted
Thanks for sharing your experience! We’re glad our product is making a difference for you.
- Rated 5 out of 5 stars
As Reviewed
JD712 Posted
Doing research before my purchase proved to be especially helpful in this case. You can't beat this for affordable, loud (but not distorted) sound. It also allows options for music, outdoor and podcast listening.
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Hyper Pink
Brand response from Logitech
Posted
We appreciate you taking a moment to share your experience. It’s great to know that our product is living up to your expectations and making your tasks easier. Your support means the world to us—thanks for being a Logitech customer.
- Rated 5 out of 5 stars
Wonderboom
Justin Posted
I love this product very much!!! The sound is outstanding! The battery life as well is very good. I have been using it for 5 days and still rocking,
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black
Brand response from Logitech
Posted
That's great to hear! The Ultimate Ears WONDERBOOM 4 is a fantastic choice for a portable Bluetooth speaker. Its impressive sound quality, durable design, and long battery life make it perfect for outdoor adventures and indoor listening.
- Rated 5 out of 5 stars
Perfect for me
ElleDeeJay Posted
Love the color and sound quality. Love that it’s drop proof, waterproof and 360 sound! Also love the volume buttons belong obvious!
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Hyper Pink
Brand response from Logitech
Posted
Thank you for your kind words about the Ultimate Ears - WONDERBOOM 4! We're thrilled to hear you're enjoying the vibrant color, impressive sound quality, and the durability features. We appreciate your feedback!
- Rated 2 out of 5 stars
Great Sound, Poor Longevity
GabrielaG Posted
I bought this in December 2024. It had a really good sound system and was waterproof, but it suddenly stopped working. I’ve tried turning it off and on, disconnecting and reconnecting the Bluetooth, and even charging it overnight, but nothing worked. I had an older version before this one, and that one lasted me over 5 years.
No, I would not recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black
Brand response from Logitech
Posted
We’re sorry to hear that the Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker didn’t fully meet your expectations. This isn’t the experience we want for you. Please reach out to us at socialcare@logitech.com so we can help resolve the issue
- Rated 5 out of 5 stars
Great sound
DavidV Posted
Awesome sound everyday use when closing at my job
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Joyous Brights
Brand response from Logitech
Posted
Thanks for your kind words! We’re proud to know our product is meeting your needs. Your support keeps us motivated.
- Rated 5 out of 5 stars
Great little speaker.
TimothyH Posted
Great small little speaker that sounds loud and clear.
I would recommend this to a friendBrand response from Logitech
Posted
"That's great to hear! The Ultimate Ears WONDERBOOM 4 is a fantastic choice for a portable Bluetooth speaker. Its impressive sound quality, durable design, and long battery life make it perfect for outdoor adventures and indoor listening.
"
- Rated 5 out of 5 stars
Big Sound in a small pakedg
JDragt Posted
This is one of the best sounding speakers for size and the price especially if you get it on sale.
I would recommend this to a friendBrand response from Logitech
Posted
That's fantastic to hear! We're thrilled your Ultimate Ears WONDERBOOM 4 Speaker delivers "Big Sound in a small package," making it one of the best for its size and price. Enjoy the powerful audio!
- Rated 5 out of 5 stars
Best speaker right now
Rodney Posted
Small wonderboom with great sound. Price is affordable also
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black
Brand response from Logitech
Posted
That's awesome to hear! The Ultimate Ears WONDERBOOM 4 really lives up to its reputation as a "small wonder" with great sound. It's fantastic that you're finding the price affordable too, especially with its waterproof, dustproof, and floatable design – perfect for any adventure! Thanks for letting us know you're so happy with your purchase.
- Rated 5 out of 5 stars
Amazing
Mjay2010 Posted
Honestly this little speaker is amazing and it gets pretty loud. The outdoor boost is pretty great. And love that the colors.
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Hyper Pink
Brand response from Logitech
Posted
Thank you for your positive review of the Ultimate Ears WONDERBOOM 4! We're thrilled to hear that you're enjoying the sound quality, outdoor boost, and stylish design. Your satisfaction is our top priority.
- Rated 5 out of 5 stars
Wonderboom 4
AureaA Posted
Have the previous version. Bought the new version for my husband and he loves that it’s usb-c and can switch between podcast and an outdoor mode! It’s his go to speaker to move between the shower and the treadmill!
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Joyous Brights
Brand response from Logitech
Posted
Thank you for your glowing review of the Ultimate Ears WONDERBOOM 4! We're thrilled to hear that you and your husband are enjoying the new features and versatility of the speaker. It's fantastic to hear that it's become a go-to for both indoor and outdoor activities. Your feedback is greatly appreciated!
- Rated 5 out of 5 stars
BIg sound sMALL support
JeanB Posted
Ultimate Ears Wonderboom 4 just blows me away every time I take it out—it's like having a mini concert in your pocket! The portability is next level; at just 0.9 pounds and super compact, it clips right onto your backpack or fits in a cup holder, perfect for hikes, beach days, or just chilling in the yard. I love how it floats also. Battery lasts forever too—easily 14+ hours on a charge, which is a game-changer for all-day adventures. That said, it's a bummer there's no app support at all; you can't tweak the EQ beyond the basic Outdoor Boost or new Podcast mode, which means you're stuck with the out-of-the-box sound if you want more customization. It's punchy with decent bass for its size, but without app tweaks, it might not hit the sweet spot for audiophiles. Still, for quick, worry-free sound on the go, it's a total winner—highly recommend if you're not chasing fancy controls!
I would recommend this to a friendThis review is from Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black
Brand response from Logitech
Posted
Thank you for your awesome review of the Ultimate Ears WONDERBOOM 4! We're stoked to hear it feels like a "mini concert in your pocket" and that its portability, floating design, and 14+ hour battery life are perfect for your hikes, beach days, and backyard chills. It’s great to know the compact size and clip-on feature make it such a reliable adventure buddy! We hear you on the lack of app support and EQ customization. It’s a fair point for audiophiles looking for more control. We’ll pass that feedback along to our team. Still, we’re thrilled you’re loving the punchy sound and worry-free vibe for on-the-go use. Thanks for the recommendation, and let us know how it holds up on your next outing!