Short answer: the Bose Portable Smart Speaker if sound quality matters most, the Ultimate Ears Boom 3 if price matters most. The Bose Portable Smart Speaker ranks #78 of 164 medium speakers, rated 3.4/5, at $399. The Ultimate Ears Boom 3 ranks #111, rated 2.9/5, at $134.99, $264.01 cheaper.
The Bose Portable Smart Speaker is the better-sounding option. Both Alexa and Google Assistant are built in, and RTINGS rates its microphones as excellent at hearing commands from far away or in a noisy room. It supports AAC Bluetooth, which the Ultimate Ears Boom 3 lacks. It charges over USB-C rather than Micro USB. The catch: RTINGS found the out of the box tuning boomy and says it doesn’t get very loud; the app’s bass and treble sliders help, and SoundGuys recommended cutting bass by 10 to 20 steps to balance it.
The Ultimate Ears Boom 3 is the lighter, tougher pick. 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. At 1.3 lbs (608 g) it weighs much less than the Bose Portable Smart Speaker at 2.3 lbs (1.06 kg). It is rated IP67 against IPX4 for the Bose Portable Smart Speaker. It plays in stereo from a single unit, unlike the Bose Portable Smart Speaker. Watch for: Not stereo, barely any bass, recessed treble.
Buy the Bose Portable Smart Speaker if sound quality matters more than the price. Buy the Ultimate Ears Boom 3 if the price matters more than sound quality.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Bose Portable Smart Speaker | Ultimate Ears Boom 3 | |
|---|---|---|
| Price | $399.00 | $134.99 |
| Ranked | #78 of 164 in Medium Size Portable Bluetooth Speakers | #111 of 164 in Medium Size Portable Bluetooth Speakers |
| Aux Input | No | No |
| Battery Life | 12 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| IP Rating | IPX4 | IP67 |
| Power Input | USB-C | Micro USB |
| Stereo | No | Yes |
| Omnidirectional | Pointing up | Yes |
| Weight | 2.3 lbs (1.06 kg) | 1.3 lbs (608 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 4.2 |
| Dimensions | 7.6” x 4.7” x 4.1” (192 x 119 x 104 mm) (H x W x D) | 7.2” x 2.9” (184 x 73 mm) |
| App | Yes (Bose Music) | Yes (Ultimate Ears BOOM & MEGABOOM app) |
| Built-in Microphone | Yes (far-field mic array, mic mute button) | No |
| Bluetooth Codecs | SBC, AAC | SBC |
| EQ | Yes (Bass/Treble) | Yes (via app) |
| Drivers | 1x high-excursion driver with 360-degree deflector + 3x passive radiators | 2x 2” active drivers + 2x 2” x 4” passive radiators |
| Digital Aux Input | No | No |
| Wi-Fi | Yes | - |
| Voice Assistants | Amazon Alexa & Google Assistant | - |
| Party Mode | Yes (Bose Music multi-room, SimpleSync, AirPlay 2) | Yes (PartyUp up to 50 speakers) |
| Power Bank | No | - |
| Strap | No | Yes (built-in loop) |
| Streaming Services | AirPlay 2, Chromecast built-in, Spotify Connect, Amazon Music, Pandora, SiriusXM, TuneIn | - |
| Bass Extension (-10dB) | - | 91Hz |
| TWS | - | Yes |
| Maximum SPL | - | 87dB (Manufacturer specified) |
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Prices on this page were last checked October 4, 2026 at 9:58 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
Bose Portable Smart Speaker: $399.00 Bose eBay
Pros: Both Alexa and Google Assistant are built in, and RTINGS rates its microphones as excellent at hearing commands from far away or in a noisy room. It works as a Wi-Fi speaker at home (AirPlay 2, Chromecast built-in, Spotify Connect) and as a Bluetooth speaker away from Wi-Fi, weighs about 1 kg with a carry handle, and is IPX4 splash resistant. SoundGuys measured 13 hours 6 minutes of playback at 75 dB, beating Bose’s 12 hour claim, and found the bass impressive for its size, especially near a wall or corner. Its 360 degree design spreads sound evenly around a room.
Cons: RTINGS found the out of the box tuning boomy and says it doesn’t get very loud; the app’s bass and treble sliders help, and SoundGuys recommended cutting bass by 10 to 20 steps to balance it. Pushed to full volume, Tom’s Guide heard unbalanced sound and Pocket-lint found the bass struggling and turning incoherent. RTINGS measured only about 5 hours of battery in its own test. It is mono, has no aux input (the USB-C port only charges), uses Bluetooth 4.2, and the Bose Music app supports a limited list of streaming services. IPX4 covers splashes only, not submersion or dust.
Full Bose Portable Smart Speaker review and specifications →
| App | Yes (Bose Music) |
|---|---|
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes (far-field mic array, mic mute button) |
| Digital Aux Input | No |
| Dimensions | 7.6” x 4.7” x 4.1” (192 x 119 x 104 mm) (H x W x D) |
| Drivers | 1x high-excursion driver with 360-degree deflector + 3x passive radiators |
| EQ | Yes (Bass/Treble) |
| IP Rating | IPX4 |
| Omnidirectional | Pointing up |
| Party Mode | Yes (Bose Music multi-room, SimpleSync, AirPlay 2) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | No |
| Streaming Services | AirPlay 2, Chromecast built-in, Spotify Connect, Amazon Music, Pandora, SiriusXM, TuneIn |
| Voice Assistants | Amazon Alexa & Google Assistant |
| Weight | 2.3 lbs (1.06 kg) |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
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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.
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