Wireless Earbuds
Sennheiser MOMENTUM True Wireless 4
8.5/10SoundGuys scoreRead our review ›
$179.95at Amazon
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1 / 10Bose
Bose Ultra Open
Sound
2.3/ 5
SoundMDAQS Overall2.3
1.05.0
A 2.3 puts its audio quality in the bottom 10% of wireless earbuds we've measured.
Measured on 63 of the 264 we've cataloged.
See the lab data ↓Frequency response · Audio quality
Key specs
Battery Life Earbuds
8.9 hAbove average8.9 h
3 h15 h
above average for wireless earbuds — based on 247 of 264 we've cataloged.
Battery Life With Case
26.5 hBelow average26.5 h
7 h60 h
below average for wireless earbuds — based on 245 of 264 we've cataloged.
IP Rating
IPX4Most commonIPX435%IP5516%IP5415%IPX512%
IPX4 is the most common — on 35% of the 244 wireless earbuds we've cataloged (of 264).
Noise Cancellation Type
NoneActive61%Passive13%Hybrid11%None8%
None appears on 8% of the 180 wireless earbuds we've cataloged (of 264).
Battery
- Battery Life Earbuds
- 8.9 h
- Battery Life With Case
- 26.5 h
- Full Charge Minutes
- 60 min
- Battery Life Anc On
- 4.5 h
- Fast Charging
- Yes
Build
- IP Rating
- IPX4
- Sweat Resistance
- Yes
- Water Resistance
- Yes
- Material Chassis Primary
- Plastic
Sound
- Noise Cancellation Type
- None
- Ambient Mode
- Yes
- Frequency Response Signature
- U-shaped
- Impedance
- 32 Ω
Connectivity
- Bluetooth Version
- 5.3
- Bluetooth Codec
- SBC, AAC, aptX Adaptive, Snapdragon Sound
- Connection Type
- Bluetooth
- Headphone Jack
- No
- Multipoint Devices
- Yes - 2 devices
Design
- Earbud Form Factor
- Open-ear
- Color Options
- Black, white smoke
- Wearing Style
- Ear hook
- Weight Per Earbud
- 6 g
- Weight With Case
- 57 g
Features
- Certified For
- Google Fast Pair
- Companion App
- Yes
- Control Type
- Physical buttons
- Eq Customization
- Yes
- Spatial Audio
- Yes
Lab data
How we test ›Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.
Bose Ultra OpenSoundGuys Headphone Preference Curve
Measured frequency response (dB relative) against the SoundGuys Headphone Preference Curve. When the measurement goes above the dashed line, that frequency is louder than our preference curve, and when it goes below: it's quieter. Use the curve for comparison purposes only, as your taste may vary.
| Frequency (Hz) | Response (dB) |
|---|---|
| 20 | -42.0 |
| 25 | -36.2 |
| 32 | -37.7 |
| 40 | -28.9 |
| 50 | -20.3 |
| 63 | -12.4 |
| 80 | -6.0 |
| 100 | -2.5 |
| 125 | -0.1 |
| 160 | -1.1 |
| 200 | -1.6 |
| 250 | -2.2 |
| 315 | -2.4 |
| 400 | -2.5 |
| 500 | -2.5 |
| 630 | -1.9 |
| 800 | -0.9 |
| 1000 | 0.0 |
| 1250 | 1.2 |
| 1600 | 3.2 |
| 2000 | 5.3 |
| 2500 | 8.3 |
| 3150 | 13.6 |
| 4000 | 19.4 |
| 5000 | 14.3 |
| 6300 | 12.1 |
| 8000 | 3.8 |
| 10000 | 3.3 |
| 12500 | 8.4 |
| 16000 | 0.2 |
| 20000 | -14.1 |
Bose Ultra Open
2.8
2.4
2.4
2.3
Multi-Dimensional Audio Quality Scores (1–5), modeled from the measured response. Higher is better across timbre, distortion, and immersiveness — add other models to see where this one lands.
SoundGuys review
Read the full review ›Battery life7.3
Comfort & fit7.5
Connectivity5.0
Design6.0
Portability7.5
Features7.0
The verdict
The Bose Ultra Open Earbuds bring a unique "cuff-like, clip-on" design to the open-ear world, but unfortunately, they still suffer from sonic compromises like other open-ear options.
✓What we like
✓Allow you to maintain awareness naturally
✓Secure fit
✓IPX4
✕What could be better
✕Sound quality
✕Expensive
✕Subpar microphone performance
Related comparisons
Browse all versus ›See how the Bose Ultra Open stacks up against the competition.
Features & Opinions
More from the team ›Commentary and deep dives from the SoundGuys editorial team.
Bose ditched the headphone jack without ditching the headphone jackThis is the one cable I want every pair of USB-C headphones to include.
Dave CarrVideo Producer/WriterSonos or Bose? Here's how I'd choose my home theaterBoth systems provide an immersive experience, but what you plan to add later could make one a much better fit.Dave CarrVideo Producer/WriterSkip the $129 Bose SoundLink Micro: Here are 2 look-alikes I'd buy for lessYou don't have to spend a lot of money to get a great ultra-portable Bluetooth speaker. Here's two I'd recommend instead.Dave CarrVideo Producer/WriterBose SoundTouch is officially dead, but your speakers may still surviveBose didn’t completely brick SoundTouch speakers, but the shutdown still changed what owners originally paid for.Dave CarrVideo Producer/WriterDon't buy the JBL Charge 6. Buy these three speakers insteadThe JBL Charge 6 is a solid speaker, but these three alternatives may be worth buying instead.Dave CarrVideo Producer/WriterApple just took down Bose at their own gameFor decades, Bose has prided itself on this one major advantage of their headphones and earbuds. Now, Apple has beat them at their own game.
Chase BernathBrand & Partnerships ManagerHow long should your earbuds last? Our battery tests have the answerEarbuds don't last long, but how much is enough?
Christian ThomasEditor-at-large
Dave CarrVideo Producer/WriterSonos or Bose? Here's how I'd choose my home theaterBoth systems provide an immersive experience, but what you plan to add later could make one a much better fit.Dave CarrVideo Producer/WriterSkip the $129 Bose SoundLink Micro: Here are 2 look-alikes I'd buy for lessYou don't have to spend a lot of money to get a great ultra-portable Bluetooth speaker. Here's two I'd recommend instead.Dave CarrVideo Producer/WriterBose SoundTouch is officially dead, but your speakers may still surviveBose didn’t completely brick SoundTouch speakers, but the shutdown still changed what owners originally paid for.Dave CarrVideo Producer/WriterDon't buy the JBL Charge 6. Buy these three speakers insteadThe JBL Charge 6 is a solid speaker, but these three alternatives may be worth buying instead.Dave CarrVideo Producer/WriterApple just took down Bose at their own gameFor decades, Bose has prided itself on this one major advantage of their headphones and earbuds. Now, Apple has beat them at their own game.Chase BernathBrand & Partnerships ManagerHow long should your earbuds last? Our battery tests have the answerEarbuds don't last long, but how much is enough?Christian ThomasEditor-at-largeMore Wireless Earbuds
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