Ultimate Ears Wonderboom vs Ultimate Ears Boom 4

Last updated: August 18, 2026

Short answer: the Ultimate Ears Wonderboom. It ranks #87 of 136 medium speakers by sound quality at $79; 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 gets right: IP67 rated and floats. The catch: Not stereo, barely any bass, recessed treble.

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

Buy the Ultimate Ears Wonderboom. 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.

If battery life is a priority, the Ultimate Ears Boom 4 is rated for 15 hours versus 10 hours for the Ultimate Ears Wonderboom.

Buy the Ultimate Ears Boom 4 at Amazon ($105) →

Ultimate Ears Wonderboom vs Ultimate Ears Boom 4

Specifications Side By Side

Ultimate Ears Wonderboom Ultimate Ears Boom 4
Price$79 Discontinued$105
Ranked#87 of 136 in Medium Size Portable Bluetooth Speakers#88 of 136 in Medium Size Portable Bluetooth Speakers
Battery Life10 hours (Manufacturer specified)15 hours (Manufacturer specified)
Power InputMicro USBUSB-C
StereoNoYes
OmnidirectionalYesNo
Weight0.9 lbs / 425 g1.4 lbs / 620 g
IP RatingIPX7IP67
Drivers2x 1.6" active drivers + 2x 1.8" x 2.6" passive radiators2x 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
DiscontinuedYes-
Digital Aux InputNoNo
Bluetooth Version-5.1
Dimensions-7.2" x 2.9" x 2.9" (184 x 73 x 73 mm)
Power Bank-No
Aux Input-No
Max Volume-85dBC
Buy the Ultimate Ears Boom 4 at Amazon ($105) →

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

The Two Speakers In Full

Ultimate Ears Wonderboom: $79 Discontinued

Ultimate Ears Wonderboom ranking card

Pros: IP67 rated and floats. Compact, light, and simple to use.

Cons: Not stereo, barely any bass, recessed treble. Dip at 9khz. Low mid bass distortion. Not technically a 360 speaker, only front and rear. Discontinued.

Full Ultimate Ears Wonderboom review and specifications →

AppNo
Battery Life10 hours (Manufacturer specified)
Built in MicrophoneNo
Digital Aux InputNo
DiscontinuedYes
Drivers2x 1.6" active drivers + 2x 1.8" x 2.6" passive radiators
EQNo
IP RatingIPX7
OmnidirectionalYes
Party ModeNo
Power InputMicro USB
StereoNo
TWSYes
Weight0.9 lbs / 425 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%

Full Ultimate Ears Boom 4 review and specifications →

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
Check current price at Amazon ($105) →Search eBay for Ultimate Ears Boom 4 →

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