Ultimate Ears Wonderboom 3 vs Ultimate Ears Boom 4

Last updated: August 18, 2026

Short answer: the Ultimate Ears Wonderboom 3. It ranks #85 of 136 medium speakers by sound quality at $69.99; the Ultimate Ears Boom 4 ranks #88 and costs $105, so there is not much of a tradeoff to weigh.

What the Ultimate Ears Wonderboom 3 gets right: IP67 rated, floats, and is rated to survive a 5 ft drop onto hard surfaces. The catch: Not stereo, barely any bass.

The case for the Ultimate Ears Boom 4: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. The tradeoff: Not much improvement over the old ones.

Buy the Ultimate Ears Wonderboom 3. It ranks higher for sound quality than the Ultimate Ears Boom 4 and costs less, so there is no real case for the other one.

Ultimate Ears Wonderboom 3 vs Ultimate Ears Boom 4

Specifications Side By Side

Ultimate Ears Wonderboom 3 Ultimate Ears Boom 4
Price$69.99$105
Ranked#85 of 136 in Medium Size Portable Bluetooth Speakers#88 of 136 in Medium Size Portable Bluetooth Speakers
Bass Extension (-10dB)76Hz-
Battery Life14 hours (Manufacturer specified)15 hours (Manufacturer specified)
Bluetooth Latency166ms-
Max Volume87dB85dBC
Power InputMicro USBUSB-C
StereoNoYes
OmnidirectionalYesNo
Weight0.9 lbs / 420 g1.4 lbs / 620 g
IP RatingIP67IP67
Bluetooth Version5.25.1
Dimensions4.1" x 3.8" (104 x 95.3 mm)7.2" x 2.9" x 2.9" (184 x 73 x 73 mm)
Drivers2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm)2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators
TWSYesYes
Party ModeNo-
AppNoYes
EQNoYes (via app)
Built in MicrophoneNoNo
Power BankNoNo
Aux InputNoNo
Digital Aux InputNoNo

More useful head-to-heads from the same speaker class:

The Two Speakers In Full

Ultimate Ears Wonderboom 3: $69.99 Amazon

Ultimate Ears Wonderboom 3 ranking card

Pros: IP67 rated, floats, and is rated to survive a 5 ft drop onto hard surfaces. 14 hour battery - longer than the Wonderboom 2.

Cons: Not stereo, barely any bass. Boosted 93hz upper bass. Cuts bass heavily at high volume. You can tell from the micro USB that they are just feeding you the same crap hardware over and over, this is inexcusable for a product released in 2022. Not technically a 360 speaker, only front and rear.

AppNo
Aux InputNo
Bass Extension (-10dB)76Hz
Battery Life14 hours (Manufacturer specified)
Bluetooth Latency166ms
Bluetooth Version5.2
Built in MicrophoneNo
Digital Aux InputNo
Dimensions4.1" x 3.8" (104 x 95.3 mm)
Drivers2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm)
EQNo
IP RatingIP67
Max Volume87dB
OmnidirectionalYes
Party ModeNo
Power BankNo
Power InputMicro USB
StereoNo
TWSYes
Weight0.9 lbs / 420 g

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Ultimate Ears Boom 4: $105 Amazon

Ultimate Ears Boom 4 ranking card

Pros: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. 15 hour battery. Customizable EQ and speaker-pairing via the UE app.

Cons: Not much improvement over the old ones. Weak bass extension and thuddy bass. Gets distorted above 90%

AppYes
Aux InputNo
Battery Life15 hours (Manufacturer specified)
Bluetooth Version5.1
Built in MicrophoneNo
Digital Aux InputNo
Dimensions7.2" x 2.9" x 2.9" (184 x 73 x 73 mm)
Drivers2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators
EQYes (via app)
IP RatingIP67
Max Volume85dBC
OmnidirectionalNo
Power BankNo
Power InputUSB-C
StereoYes
TWSYes
Weight1.4 lbs / 620 g

As an eBay Partner, we may be compensated if you make a purchase.