Skip to contentGo to Product Search
Main Content

Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Sand Beige

Model: 984-002038
SKU: 6628860
Sold byBest Buy
Top Deal
Top Deal
$79.99
Save $10
The comparable value is $79.99
or
Availability
FREE shipping to
Sold by
Best Buy

About This Item

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.
  • Key Specs
    • Speaker Pairing: true (Wirelessly connect the speaker to another compatible speaker for a more immersive sound experience or multi-room audio. Pairing may require use of an app or additional setup.)
    • Speakerphone: false
    • Wireless: true
    • Rechargeable: true
    • USB Device Charging: true
  • General
    • Brand: Ultimate Ears
    • Model Number: 984-002038
    • Product Name: WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design
    • Color: Sand Beige
  • Audio
    • Number of Speakers: 1
    • Speaker Pairing: true (Wirelessly connect the speaker to another compatible speaker for a more immersive sound experience or multi-room audio. Pairing may require use of an app or additional setup.)
  • Voice
    • Speakerphone: false
    • Built-In Microphone: false
  • Connectivity
    • Wireless Multi-Room Audio: true (Technology that allows multiple speakers and/or soundbars to be connected wirelessly and play audio in separate rooms.)
    • Wireless: true
    • Wireless Connectivity: Bluetooth (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
    • Network Connectivity: Bluetooth (The manner in which a device sends data to another device over a long distance using a cellular network.)
    • Auxiliary Input: false
  • Features
    • Protective Qualities: Waterproof, Water resistant, Shock resistant
    • Maximum Depth of Water Resistance: 3.3 feet (Measurement of the maximum depth of water in which the product is able to resist some degree of water penetration.)
    • Control Button(s): Volume, Play/Pause, Bluetooth, Power on/off
    • Controls: Power ON/Off, Volume control buttons, Double Up button, Outdoor Boost/Podcast Mode button
    • Remote Control Included: false
    • Lighting Type: None
  • Power
    • Rechargeable: true
    • Battery Charge Time: 2.6 hours (Battery charge time will vary depending on the product configuration, product model, applications loaded on the product, power management setting of the product and the product features used by the customer. Charging time will likely decrease with time and usage of the battery.)
    • Battery Chemistry: Lithium-ion polymer
    • USB Device Charging: true
  • Dimensions
    • Product Height: 4.09 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
    • Product Width: 3.75 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Depth: 3.75 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
    • Product Weight: 0.93 pounds (The out of box weight of the item.)
  • Warranty
    • Warranty - Parts: 2 years
    • Warranty - Labor: None
  • Other
    • UPC: 097855201614

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.

  • Small 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).
Whats Included
  • ULTIMATE EARS WONDERBOOM 4 Speaker
  • User Documentation
Disclaimers
  • *Actual battery life will vary with use, settings and environmental conditions.
  • **Actual Bluetooth range will vary depending on the use, setting, environmental conditions and number of connected devices.

Q: What is the wireless range?

A: The wireless range of this speaker is 131 feet.

Q: Is the speaker compatible with my phone?

A: This speaker is compatible with smartphones, tablets, and other devices that support Bluetooth Advanced Audio Distribution Profile (A2DP).

Q: What is the battery life?

A: The battery life of this device is 14 hours.

Q: What is the weight and dimensions of the speaker?

A: The speaker weighs 0.93 pounds and measures 3.75 inches in width, 3.75 inches in depth, and 4.09 inches in height.

Q: How deep can the speaker be submerged in water?

A: The maximum depth of water resistance for the speaker is 3.28 feet.

Q: How do I pair two WONDERBOOM 4 speakers together?

A: You can pair two WONDERBOOM 4 speakers for bigger sound or stereo using the Ultimate Ears | BOOM app.

Q: What is the battery life of this portable speaker?

A: The WONDERBOOM 4 offers 14 hours of playtime on a single charge.

Q: Is this speaker waterproof?

A: Yes, the WONDERBOOM 4 is waterproof, dustproof, and it even floats. It has an IP67 rating, meaning it can be submerged in 1 meter of water for 30 minutes.

Sponsored

Reviews

Customers are sayingCustomers highly value the WONDERBOOM 4 Portable Wireless Bluetooth Speaker for its sound quality and portability. Many appreciate the speaker's good battery life and easy Bluetooth connectivity. The water resistance is a welcomed feature, along with the volume and size. Overall, customers seem to enjoy the bass and waterproof design.
This summary was generated by AI based on customer reviews.
  • Sound Quality (204)
  • Portability (84)
  • Battery Life (47)
  • Connectivity (22)
  • Water Resistance (17)

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.

Compare similar products

Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Sand Beige
Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Sand Beige

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.

Ultimate Ears - BOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Active Black

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.

Sony - XB100 Compact Bluetooth Speaker - Black

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.

JBL - Go 5 - Ultra-portable waterproof and drop-proof speaker - 2026 - Black
5.0(6)

Big vibes, pocket-sized. The JBL Go 5 has serious audio power. Legendary JBL sound shines brightly through crystal-clear details and deep, rich bass that feels louder than should be possible in this palm-sized casing. But the Go 5 is more than iconic sound. New edge lighting powers a soft ambient glow—and you also get selectable themes and visual cues for powering on, pairing, and battery life. And with up to 10 hours of battery life, you can count on the JBL Go 5 to soundtrack your day from morning til night. Take this IP68 waterproof, dust-proof, and drop-proof speaker anywhere—and never worry about a surprise rain shower or accidental fumble again. And hey—when the party calls for louder sound, this speaker still rocks. Bump two Go 5 speakers together to link them up through AirTouch for true stereo sound, or use Auracast to pair up to JBL Auracast-enabled speakers and turn the jams up even louder. And with the JBL Portable app, you can make your listening experience truly yours. It's big sound—all there for the grabbing and going.

Pros for Ultimate Ears - WONDERBOOM 4 Portable Wireless Bluetooth Speaker with Waterproof, Dustproof and Floatable design - Sand Beige
Sound Quality, Portability, Battery Life, Connectivity, Water ResistanceThere were no pros for this productThere were no pros for this productThere were no pros for this product

Specs

No content

Similar products from outside of Best Buy

sponsored

Finance Options

My Best Buy® Credit Card
Buy Now, Pay Later
4 payments starting at $17.50

Special Offers

Included with Purchase