Ultimate Ears WONDERBOOM 4 Outdoor Speakers Bluetooth Waterproof with Big Bass & 360-Degree Sound, Dustproof Floating Wireless Speaker, 131ft Range - Pink
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AI Verdict
This is a nearly indestructible, go-anywhere Bluetooth speaker for casual listening by the pool or on a hike, not for audiophiles seeking perfect sound fidelity.
This speaker is a strong fit for its target audience: people who need a durable, portable speaker for casual listening in environments where other electronics would fail. Its IP67 waterproof rating, floatable design, and solid 14-hour battery life make it ideal for outdoor adventures and poolside use. The sound is surprisingly powerful for its size, though it's not built for audiophile-level critique.
If you need more volume and better bass for larger parties, look for a portable speaker with a higher power output (over 20W) and a dedicated app for EQ customization.
Regret Score™
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Pros
- IP67 rating means it's fully waterproof and dustproof, and it floats in water.
- Users report the 14-hour battery life is accurate for all-day listening at moderate volumes.
- Can be paired with a second WONDERBOOM 4 for a true stereo sound setup.
- Features a modern USB-C charging port, an upgrade from the previous model's micro-USB.
- The oversized volume buttons are easy to see and press, even when the speaker is wet.
- Supports Bluetooth multipoint, allowing two devices to be connected at once.
Cons
- Sound quality degrades and distorts at volumes above 75%.
- The new 'Podcast Mode' is criticized for making voices sound thin and unnatural.
- Cannot be paired with older WONDERBOOM models (1, 2, or 3) for stereo sound.
- There is no built-in microphone, so it cannot be used for speakerphone calls.
- Lacks app support, so there's no way to customize EQ settings beyond the built-in presets.
Dimension Scores
Delivers surprisingly clear and rich 360-degree sound for its size, though it can get harsh and distorted at maximum volume.
Users are consistently impressed by the loud volume and punchy bass from such a small speaker, though deep sub-bass is lacking.
Features a stable Bluetooth connection with a 131ft range and multipoint pairing, but the inability to pair with older models is a drawback.
Its IP67 waterproof/dustproof rating, floatable design, and drop-proof construction make it a best-in-class choice for durability and portability.
Best For
- Listening to music in the shower, at the beach, or by the pool without worrying about water damage.
- Clipping to a backpack for hiking or camping thanks to its durable, drop-proof build.
- Providing 360-degree background music for small outdoor gatherings or on a patio.
- Use as a simple desktop speaker for casual listening while working.
Not Recommended For
- Critical listening sessions where audio fidelity and deep bass are top priorities.
- Users who need to take hands-free phone calls via their speaker.
- Anyone hoping to pair it with a previous generation Wonderboom for stereo sound.
Watch Out For
- Stereo pairing only works with another WONDERBOOM 4; it's not backward-compatible with the 3 or any other models.
- The startup and Bluetooth connection sounds are very loud and cannot be disabled or turned down, which can be disruptive in quiet environments.
- The speaker automatically powers off after about 15 minutes of inactivity, which can be frustrating if you pause your music for a short break.
- While the USB-C port is waterproof, it's exposed with no cover, making some users nervous about sand or debris getting inside.
- The 'Outdoor Boost' and 'Podcast' EQ modes are largely considered useless, with many reviewers noting they degrade sound quality rather than improving it.
Full Specifications
| UPC | 097855189967 |
| ASIN | B0BRXL78DB |
| Brand | Ultimate Ears |
| Color | Pink |
| Shape | cylindrical |
| Style | Feminine, Modern |
| Material | Post-consumer recycled plastic |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Model Name | Wonderboom 4 |
| Unit Count | 1.0 Count |
| Item Weight | 1.21 pounds |
| Manufacturer | Logitech |
| Power Source | Battery Powered |
| Speaker Size | 40 Millimeters |
| Speaker Type | Outdoor |
| Is Waterproof | True |
| Maximum Range | 131 Feet |
| Mounting Type | Tabletop Mount |
| Warranty Type | Limited |
| Control Method | Remote |
| Bluetooth Range | 40 Meters |
| Number of Items | 1 |
| Special Feature | Dustproof, Lightweight, Portable, Shockproof, Waterproof |
| Battery Capacity | 3780 Milliamp Hours |
| Tweeter Diameter | 1 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Item model number | 984-001878 |
| Compatible Devices | Desktop, Laptop, Smartphone, Tablet, Television |
| Frequency Response | 75 Hz |
| Product Dimensions | 4"D x 4"W x 8"H |
| Subwoofer Diameter | 4 Inches |
| Included Components | Wonderboom 4 Pink |
| Number of Batteries | 1 Lithium Polymer batteries required. (included) |
| Customer Package Type | [A] |
| Water Resistance Level | Waterproof |
| Connectivity Technology | Bluetooth |
| Specific Uses For Product | Gaming, Party, Travel |
| Recommended Uses For Product | For Computers, For Smartphones or Tablets |
| Speaker Maximum Output Power | 10 Watts |
| Subwoofer Connectivity Technology | Wireless |
| Wireless Communication Technology | Bluetooth |
| Surround Sound Channel Configuration | 2.0 |
What Buyers Say
The most surprising thing about the WONDERBOOM 4 is how loud and full it sounds for something you can hold in one hand. It's genuinely tough-as-nails; users report dropping it countless times and throwing it in pools without any issues. The upgrade to USB-C is a welcome, if overdue, change from the last model. A recurring annoyance is the inability to pair with older Wonderboom speakers, forcing a complete repurchase if you want a stereo setup. The new 'Podcast Mode' is also widely panned as sounding tinny, and the unchangeable, loud startup sound drives some users crazy.
“i threw this in the pool and it just kept playing music while floating, the sound is way bigger than it should be for this size but now my old wonderboom is useless since it wont pair with this one so i guess i have to buy another.”
Common Praise
- The battery life is solid, easily lasting a full day of use on a single charge.
- It's impressively durable, surviving drops, dunks in water, and being tossed around.
- Sound is powerful and clear for its compact size, filling a room better than expected.
- The 360-degree sound design means you don't have to worry about pointing it in a specific direction.
- Finally uses a USB-C port for charging, which is a major convenience over the old micro-USB.
Common Complaints
- You can't pair it with a WONDERBOOM 3 for stereo, you have to buy two of the new model.
- The startup and connection notification sounds are extremely loud and can't be turned off.
- Sound starts to distort and lose bass at volumes over 75-80%.
- The new 'Podcast Mode' makes audio sound thin and is generally considered useless.
- The exposed USB-C port, while waterproof, feels vulnerable to getting clogged with sand or dirt.
- There's no app support for custom EQ or other settings.
Ownership Tips
- You'll quickly learn to anticipate the 15-minute auto-shutdown and tap play on your phone to keep it from turning off.
- The fabric loop on top is handy for a carabiner, but it will get dirty over time and need a scrub with soap and water.
- While the speaker floats, it often tips over, so you may need to flip it upright in the water for the sound to project properly.
- The loud startup sound is a real issue if you live with other people and want to listen to something early in the morning.
Frequently Asked Questions
Can I pair the WONDERBOOM 4 with my older WONDERBOOM 3?
No, you can only create a stereo pair with another WONDERBOOM 4 speaker. It is not compatible with previous generations for stereo linking.
Does the WONDERBOOM 4 have an auxiliary input?
No, the speaker is Bluetooth-only and does not have a 3.5mm aux jack.
Can you answer phone calls on the WONDERBOOM 4?
No, this speaker does not have a built-in microphone and cannot be used as a speakerphone.
Is the USB-C charging port waterproof?
Yes, the USB-C port is waterproof as part of the IP67 rating, but it does not have a protective cover. It's best to ensure the port is completely dry before plugging in the charging cable.
What is 'Podcast Mode'?
Podcast Mode is a new EQ preset that adjusts the sound to emphasize vocals. However, many users find it makes voices sound thin and unnatural.
Does it work with the Ultimate Ears app?
No, the WONDERBOOM 4 does not connect to the UE companion app, so you cannot adjust EQ settings or disable the startup sounds.
How is this different from the WONDERBOOM 3?
The main differences are the upgrade to a USB-C charging port and the addition of the new 'Podcast Mode' EQ. The core audio hardware and design are nearly identical.
Buying Guide
For a speaker like this, you should focus on its toughness and real-world usability, not just audio specs. The IP67 rating is what lets you take it to the beach or in the shower without fear. '360-degree sound' means it's great for placing in the middle of a group, as it sounds the same from all sides. Don't get hung up on the 10-watt power rating; for its size, users confirm it's surprisingly loud.
IP67 Rating
This is a formal rating for durability. The '6' means it's totally dust-tight, so sand at the beach is no problem. The '7' means it can be submerged in up to 1 meter of water for 30 minutes, so it will easily survive falling in the pool or getting rained on.
14-Hour Battery
This is how long you can play music at a medium volume. It means you can take it out for a full day's activity, like a long hike or a whole afternoon at the beach, without needing to find a charger.
Stereo Pairing
This lets you connect two WONDERBOOM 4 speakers wirelessly. One becomes the left channel and one becomes the right, creating a much more immersive sound experience than a single speaker can provide. Just remember, it only works with another WONDERBOOM 4.
Alternatives
If you need a speaker that can also take phone calls, search for a portable speaker that explicitly lists a 'built-in microphone'. For better sound customization, look for speakers that are supported by a companion app with a graphic EQ.
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