Short answer: the Ultimate Ears Boom 3 for sound, the Wonderboom for price, though neither ranks well in its class. The Boom 3 brings rich and warm bass without muddying the mix, crisp highs, excellent 15-hour battery life and PartyUp pairing for up to 150 speakers, but both speakers are not stereo and have barely any bass with recessed treble. The Boom 3 costs $134.99 against the Wonderboom’s $79. Both are rated below 3.0/5 among the 151 medium speakers, so if sound quality matters, consider the Earfun Uboom L instead, ranked #1 at $49.79.
Buy the Ultimate Ears Boom 3, since the Ultimate Ears Wonderboom is discontinued and only worth hunting down used.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Ultimate Ears Wonderboom | Ultimate Ears Boom 3 | |
|---|---|---|
| Price | $79 Discontinued | $134.99 |
| Ranked | #99 of 151 in Medium Size Portable Bluetooth Speakers | #101 of 151 in Medium Size Portable Bluetooth Speakers |
| Battery Life | 10 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| Power Input | Micro USB | Micro USB |
| Stereo | No | Yes |
| Omnidirectional | Yes | Yes |
| Weight | 0.9 lbs (425 g) | 1.3 lbs (608 g) |
| IP Rating | IPX7 | IP67 |
| Drivers | 2x 1.6” active drivers + 2x 1.8” x 2.6” passive radiators | 2x 2” active drivers + 2x 2” x 4” passive radiators |
| TWS | Yes | Yes |
| Party Mode | No | Yes (PartyUp up to 50 speakers) |
| App | No | Yes (Ultimate Ears BOOM & MEGABOOM app) |
| EQ | No | Yes (via app) |
| Built-in Microphone | No | No |
| Digital Aux Input | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Aux Input | No | No |
| Dimensions | 4” x 3.7” (102 x 93.5 mm) | 7.2” x 2.9” (184 x 73 mm) |
| Strap | Yes (built-in loop) | Yes (built-in loop) |
| Bass Extension (-10dB) | - | 91Hz |
| Bluetooth Version | - | 4.2 |
| Maximum SPL | - | 87dB (Manufacturer specified) |
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Prices on this page were last checked October 2, 2026 at 10:18 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Ultimate Ears Wonderboom: $79 Discontinued eBay
Newer model: the Ultimate Ears Wonderboom 4, ranked higher, rated 2.9/5.
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 →
| App | No |
|---|---|
| Aux Input | No |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 4” x 3.7” (102 x 93.5 mm) |
| Drivers | 2x 1.6” active drivers + 2x 1.8” x 2.6” passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Input | Micro USB |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 0.9 lbs (425 g) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
- Ultimate Ears Wonderboom vs Ultimate Ears Wonderboom 2
- Ultimate Ears Wonderboom vs Ultimate Ears Boom 4
- Ultimate Ears Wonderboom vs Ultimate Ears Wonderboom 3
- Ultimate Ears Wonderboom vs Klipsch Groove/Heritage Groove
- Ultimate Ears Wonderboom vs Ultimate Ears Wonderboom 4
- Ultimate Ears Wonderboom vs Ultimate Ears Megaboom 3
- Ultimate Ears Wonderboom vs LG Xboom Grab
- Ultimate Ears Wonderboom vs Sony SRS-XE300
- See all 74 comparisons
Ultimate Ears Boom 3: $134.99 Amazon eBay
Newer model: the Ultimate Ears Boom 4, ranked higher, rated 2.9/5.
Pros: Rich and warm bass without muddying mix, crisp highs, excellent 15-hour battery life, stable Bluetooth connectivity, IP67 rated and floats, rugged fabric shell, can pair up to 150 speakers via PartyUp. Measured bass extension of 91Hz (-10dB).
Cons: Not stereo, barely any bass, recessed treble. 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 2021. Lots of mentions of failing batteries on amazon. Not technically a 360 speaker, only front and rear.
Full Ultimate Ears Boom 3 review and specifications →
| App | Yes (Ultimate Ears BOOM & MEGABOOM app) |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 91Hz |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 7.2” x 2.9” (184 x 73 mm) |
| Drivers | 2x 2” active drivers + 2x 2” x 4” passive radiators |
| EQ | Yes (via app) |
| IP Rating | IP67 |
| Maximum SPL | 87dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | Micro USB |
| Stereo | Yes |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 1.3 lbs (608 g) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
- Ultimate Ears Boom 3 vs Ultimate Ears Boom 4
- Ultimate Ears Boom 3 vs Klipsch Groove/Heritage Groove
- Ultimate Ears Boom 3 vs Sony SRS-XE300
- Ultimate Ears Boom 3 vs Ultimate Ears Wonderboom 2
- Ultimate Ears Boom 3 vs Ultimate Ears Wonderboom 3
- Ultimate Ears Boom 3 vs Tribit Stormbox
- Ultimate Ears Boom 3 vs Sony SRS-XB20
- Ultimate Ears Boom 3 vs Ultimate Ears Wonderboom 4
- See all 92 comparisons