8,0/10 ()
Very reliable but not cheap for what it is.
- Works very smoothly and reliably
- a bit expensive for what it is.
Read full review
Louis
7 February 2025
Automatic translation off Dutch
Ultimate Ears WONDERBOOM 4 Blue
Our choice for a mini Bluetooth speaker
Choose your speaker:
Blue
Choose the better speaker that provides more freedom of movement
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
Enjoy a 360-degree sound with the Ultimate Ears WONDERBOOM 4 Blue. You hear sound from every side of the speaker, so it doesn't matter where you sit to hear the music well. With the Outdoor Boost button, you can amplify the sound. This way, you can also hear it clearly when you're outdoors with a lot of ambient noise. If you're listening to a podcast, use the Podcast Mode so voices sound more clearly. The speaker has an IP67 certification, which makes it dustproof and water-resistant so you can easily use it by the beach or at the pool. You can listen to your music or podcasts the entire day, thanks to the 14-hour battery life. Connect a second WONDERBOOM 4 speaker for stereo sound.
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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- Maximum battery life
14 hours
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Reviews
Rating
5 stars
0
4 stars
2
3 stars
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2 stars
0
1 star
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Most helpful reviews
- 8,0/10 ()
Good sound, solid design, sometimes a bit clumsy operation
- Sturdy, waterproof
- Good sound
- Battery life
- Controls a bit vague
Read full reviewJan
4 March 2025
Automatic translation off Dutch
8,0/10 ()
Very reliable but not cheap for what it is.
- Works very smoothly and reliably
- a bit expensive for what it is.
Works very smoothly and reliably
Louis
7 February 2025
Automatic translation off Dutch
8,0/10 ()
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
Automatic translation off Dutch
Insure your bluetooth speaker
Coolblue takes care of everything, from taking out an insurance to repairs
Isn't repairing possible? You'll receive the replacement value in CoolblueCredit
30-day return window
How do I insure my bluetooth speaker?
3-year Backup Plan
15,99one-time5-year Backup Plan
25,99one-time
Suitable accessories
Specifications
The list with properties are filtered when you type
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 |
