Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Cobalt Blue
Customers are saying
Customers find value in the product's excellent sound quality, portability, and good battery life. They also appreciate its easy connectivity, water resistance, convenient size, and volume. However, a notable concern among some customers is the absence of app support.
Color
Cobalt BlueSmall Bluetooth speaker with surprisingly bigger 360° sound
That bigger 360° sound in a petite package. Boosted sound for 14 hours of playtime.
Outdoor Boost + Podcast Mode
Engineered for full stereo sound; tap the Outdoor Boost button for outdoor environments; use the new Podcast Mode to make vocals sound rich and clear.
Mini portable speaker with 14 Hours of BOOM
With a battery lasts through a day, WONDERBOOM 4 bangs on with 14 hours of playtime, so you can soak up every moment.*
Waterproof, Dust Proof, and Floatable
IP67 rating means WONDERBOOM 4 can be submerged in 1 m of water for 30 min; it’s even protected from dust; ideal for the pool, beach, or the shower.
Double up for stereo using the Ultimate Ears | BOOM app
Pair up two wireless WONDERBOOM 4 speakers for even bigger sound. Press once to double up. Press again for true stereo from both speakers, with left and right channels.
Durable, mobile speaker with 131 ft range
So you’re free to roam. Plus it’s dirt resistant, drop proof, and features a handy loop so you can take it with you.**
Made with recycled plastic
Plastic parts in WONDERBOOM 4 include a minimum of 31% post-consumer recycled plastic by weight (excluding packaging).
- Speaker PairingYesWirelessYesRechargeableYesUSB Device ChargingYes
Reviews
Rating 4.8 out of 5 stars with 315 reviews
- Sound Quality (225)
- Portability (89)
- Battery Life (48)
- Connectivity (27)
- Water Resistance (21)
- App Support (4)
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
From the manufacturer
Compare similar products
Ultraportable Bluetooth speaker with a surprisingly bigger 360° sound. It’s crisp, bassy, and ready to go with 14 hours of BOOM. The IP67 rating means it’s waterproof, dustproof, and floats. Take it to the pool, the beach, or even the shower. Experience amazing sound—wherever life takes you.
The Ultimate Ears MEGABOOM 4 Portable Waterproof Bluetooth Speaker is the ultimate Bluetooth party speaker, delivering powerful 360-degree sound and thundering bass without sacrificing balance and clarity. With a massive 20 hours of sound on a single charge, you can boom all day long. With a wireless range of 147 feet and drop protection of up to 3.28 feet, it’s safe to say the MEGABOOM 4 wireless speaker is made to move. This portable speaker is drop-proof, waterproof, floatable, and virtually indestructible. Use the Magic Button to play, pause, skip, and control your music directly from your favorite streaming service. Set up one-touch playlists on your favorite platforms like Spotify, Amazon Music on Android, and Apple Music on iOS.
Grab the super-portable wireless Bluetooth speaker that’s built for adventure. Seriously waterproof with balanced 360-degree sound, deep bass, and one-touch music controls, the Ultimate Ears BOOM 4 is the ultimate go-anywhere speaker. Experience four different EQ modes or customize yourself. You can even pair the BOOM 4 Bluetooth waterproof speaker with MEGABOOM, EVERBOOM, EPICBOOM and HYPERBOOM portable Bluetooth speakers for more fun. The BOOM 4 is an extremely wireless speaker with 147 feet of range, so you can walk away and keep the tunes comin’. Long-press the Magic Button to access your playlists, or set up one-touch playlists on your favorite streaming platforms like Spotify, Amazon Music on Android,* and Apple Music on iOS. Ultimate sound. Made to wander.
Enjoy big sound with the super-compact SRS-XB100 wireless speaker, offering powerful, clear sound, an updated IP67 waterproof and dustproof design1,2, and up to 16 hours of battery life.3 Small enough to fit in a bag or cupholder, the XB100 also features a versatile strap to take with you wherever you go.
| Pros for Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Cobalt Blue | |||
|---|---|---|---|
| Sound Quality, Portability, Battery Life, Connectivity, Water Resistance | Sound Quality, Battery Life, Portability, Connectivity, Volume | Sound Quality, Portability, Battery Life, Water Resistance, Size | Sound Quality, Portability, Battery Life, Connectivity, Size |
| Cons for Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Cobalt Blue | |||
| App Support | There were no cons for this product— | There were no cons for this product— | Volume, Power |
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