Ultimate Ears WONDERBOOM 4 Blue
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Blue
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Product information
Pros and cons
According to our Bluetooth speaker expert
- Thanks to the 360-degree sound, you hear the music clearly from anywhere in the room.
- The Outdoor Boost allows you to hear powerful sound and you clearly hear the voices in Podcast Mode.
- You can easily use the speaker at the beach, thanks to the IP67 certification.
- You can't charge your smartphone to the speaker, because it doesn't have a power bank.
Description
Included by default
- USB-C charging cable
Key specs
Maximum battery life | 14 hours | |
Weight | 0,42 kg | |
Wireless speaker size | Mini (0 - 10cm) | |
Water resistance | Waterproof | |
IP certification | IP67 | |
Built-in WiFi | ||
Controls via app | ||
Water-resistant |
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Current product
Ultimate Ears WONDERBOOM 4 Blue
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360 degrees, Stereo
360 degrees, Stereo
360 degrees
Mono
- Maximum battery life
14 hours
14 hours
17 hours
6 hours
UE PartyUp
UE BOOM
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Reviews
Rating
5 stars
2
4 stars
1
3 stars
0
2 stars
0
1 star
0
Rating per section
Sound quality
Battery life
Build quality
Design
Options
Most helpful reviews
Good sound, solid design, sometimes a bit clumsy operation
- Sturdy, waterproof
- Good sound
- Battery life
- Controls a bit vague
Nice speaker for on the road and on vacation. Nice sound, sturdy and waterproof. Due to the minimalist design it is sometimes difficult to find certain functions (e.g. battery level, connected devices)
Jan
4 March 2025
Automatically translated from Dutch
Compact box with nice clear sound
- Compact
- Loud
- Bright
- At very loud sound it becomes a little less beautiful
It is exactly what I expected for the price. A small box that is easy to carry and gives a very nice sound
Christos
31 March 2025
Automatically translated from Dutch
Really A Little MonsterBoom
- Rugged design
- 360 degree surround sound
- Deep bass in small size
- Less options to connect with an mobile app
I love it, this is my favourite portable speaker ever
Girish
11 August 2025
Insure your Bluetooth speaker
No deductible
For almost all accidents
More security than standard warranty
Coolblue takes care of everything, from taking out an insurance to repairs
How do I insure my Bluetooth speaker?
First, add your Bluetooth speaker to your shopping cart. On the next page, choose the Protection Plan below. You always have a 30-day return window and pay no deductible in case of damage.
2-year Protection Plan
7,99
one-time3-year Protection Plan
8,99
one-time
Specifications
Product
Product number | 950594 | |
Manufacturer code | 984-001895 | |
Brand | Ultimate Ears | |
Warranty | 2 years | |
Processing of your defect | Via Coolblue | |
Old product returned for free |
Physical properties
Speaker type | Bluetooth speaker, Wireless speaker | |
Width | 9,53 cm | |
Depth | 9,53 cm | |
Height | 10 cm | |
Wireless speaker size | Mini (0 - 10cm) | |
Weight | 0,42 kg | |
Color | Blue | |
Integrated light effects | ||
Built-in microphone |
Power supply
Maximum battery life | 14 hours | |
Integrated power bank |
Water resistance
Water resistance | Waterproof | |
Waterproofness certification | IP certification | |
IP certification | IP67 |
Network and streaming
Bluetooth | ||
Built-in WiFi | ||
NFC | ||
Multi-room audio | ||
Plays from network | ||
Radio | ||
Multi-speaker connectivity technology | UE PartyUp | |
Headphone jack | ||
Sound reproduction | 360 degrees, Stereo |
Controls
Controls via app | ||
Controlled via buttons on device | ||
Remote control |
Durability
Quality mark sustainable product | FSC certified packaging material |
Product contributes to sustainability | This product helps you separate trash |
Green production features | Partly made of recycled material |
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