Shokz OpenFit Pro vs Bose Ultra Open Earbuds: the two premium open-ears, and they are not the same product

The verdict

Every published number

All three spec sheets below come from the maker's own pages — Shokz's official lineup comparison and its OpenFit Pro page, and Bose's product pages for both generations of the cuff. Every listing was verified live and in stock on Amazon on November 2, 2026 through the price pipeline this site runs. Each row links to the document the figure came from.

1. Twelve grams against six

Shokz publishes 12.3 g per earbud for the OpenFit Pro. That is the heaviest open-ear earbud in our registry, heavier than the OpenFit 2 (9.4 g) and nearly double the OpenFit Air 2 (7.2 g). Bose publishes 0.014 lb per earbud for the first-generation Ultra Open, about 6.4 g, and 0.013 lb for the second generation, about 5.9 g.

Weight alone would be a thin argument. What makes it the first section on this page is that two independent labs tested both products and landed on the same split.

GearLab's reviewer, Graham Faulknor, scored the Bose cuff 8.6 out of 10 for comfort and fit and wrote that they are “the most comfortable buds we have ever worn, to the point where we forgot they were even in our ears,” adding that there was no “moist in-ear feeling” after several hours. SoundGuys was cooler on the same product — Dave Carr scored comfort 7.5 and said they are “not uncomfortable” but that having something attached to the outer ear feels strange.

On the Shokz side, SoundGuys' Adam Birney scored the OpenFit Pro 8.5 for comfort — close to GearLab's Bose number — and found the fit more stable than the OpenFit 2+ with no bounce under light jumping and head shaking. But his caveat is the one that matters here: the drivers sit inside the ear, which creates a contact point over long wear, and while they “never became uncomfortable” they lack “the forget-you're-wearing-them experience” of earlier OpenFit models.

2. IP55 against IPX4

The OpenFit Pro earbuds are IP55. Both generations of the Bose cuff are IPX4. Neither charging case carries a rating.

Read an IP code from the right: under IEC 60529 the second digit is the water test. 4 is splashing water from any direction. 5 is a low-pressure jet from a 6.3 mm nozzle. The jet test is a real step up from splashing, and the first digit is the other half of the story — the X in IPX4 means Bose has not published a dust test at all, while the 5 in IP55 is dust-protected.

For this site's reader, that gap is the single most consequential line in the table. IPX4 is a rain rating. Sweat is not rain: it is salt water that arrives continuously for an hour, dries into a crust on the contacts and the mesh, and then gets sealed into a humid plastic box in a gym bag. The mechanism, in detail, is in can sweat damage earbuds?, and the digit-by-digit explainer is IPX4 vs IPX5 vs IPX7.

We are not going to tell you a Bose cuff dies the first time you run in it — plenty of people use them for exactly that. What we will say is that if your previous pair died of moisture, IPX4 at this price is the wrong purchase, and the cheapest honest fix is not the OpenFit Pro either: the Shokz OpenDots 2 is a cuff of almost identical weight with IP57 buds and an IP54 case, for less than either product on this page.

3. The noise reduction, and what it measured

This is the OpenFit Pro's headline feature and the only one on this page with no Bose equivalent. Shokz publishes an open-ear noise reduction mode, built on three microphones per earbud and an ear adaptive algorithm, and says it halves the battery when switched on (12 hours off, 6 hours on).

Because this is the kind of claim marketing departments love, the measurement matters. SoundGuys measured it. Birney found peak attenuation near 13 dB between 300 Hz and 1.5 kHz, dropping to near zero below 200 Hz, with inconsistent behavior at high frequencies. His read: it suits office chatter and HVAC hum, not traffic, planes or sharp sounds. SoundGuys scored the feature 1.6 out of 10 on its noise-cancelling metric and passive isolation 0.6 out of 10, which is what you would expect from a design with no seal.

There is also a cost nobody advertises. Birney reported “persistent pressure sensations similar to early ANC implementations,” which lowering the level in the app reduced but did not eliminate, and noted some owners will simply turn the feature off.

On the Bose side there is nothing to measure, and Bose does not pretend otherwise. GearLab's lab numbers for the Ultra Open's noise cancellation read 0.0 low, 0.0 mid, 1.0 high — for context, GearLab measured the sealed Bose QuietComfort Ultra at 26.0, 31.2 and 30.6 on the same scale. That is not a flaw in the Ultra Open. It is the product.

4. Battery: the claims and the measurements

Shokz claims 12 hours per charge with noise reduction off, 6 hours with it on, 50 hours with the case, and a 10-minute charge worth 4 hours. Bose claims 7 hours for the first generation (4 with Immersive Audio or Auto Volume on) and 9 hours for the second (5 with one spatial feature, 4 with both), plus up to 19.5 more in the case.

Both independent labs found Bose's claim pessimistic and Shokz's optimistic, which is unusual and worth knowing. SoundGuys measured the first-generation Bose at 8 hours 53 minutes against a 7.5-hour claim. GearLab measured 8.3 hours — 8 hours 20 minutes at 75% volume. Shokz's OpenFit Pro, by contrast, measured 9 to 10 hours at 65–75% volume against its 12-hour claim, with Birney estimating about 5 hours at higher volume with noise reduction on.

So the real-world gap is narrower than the box implies: call it roughly nine or ten hours for the Shokz and eight and a half for the Bose. The Shokz still wins, and its quick charge wins by more — ten minutes for four hours against ten minutes for two.

5. Calls, and the wind

Shokz publishes three AI noise-canceling mics, wind-resistant to 25 km/h, the best published call spec of any ear-hook on this site. Bose publishes a button on each barrel and, on the second generation, two microphones with SpeechClarity.

The independent read tracks the specs. SoundGuys rated the OpenFit Pro's calls excellent in most settings, including streets and reverberant spaces, with a reader poll of 289 votes putting the mic at good or perfect for 56%. Its one exception was wind, where strong gusts “completely drown out speech.” On the Bose, SoundGuys was blunt: the mic is “subpar,” sounding in ideal conditions like “talking through a High School PA system from 1976,” and it “struggled to reject any wind noise” outdoors. In a 645-vote reader poll, 58% rated it awful or bad.

Note what both labs agree on: wind beats both. That is not a coincidence or a quality failure. Wind noise is turbulence across the microphone port itself, so there is no direction for an array to reject and no processing that recovers a signal buried before capture. The two hardware answers that actually help are a bone-conduction mic reading your jaw, or a boom arm that puts the capsule out of the airflow — see wind noise and open-ear earbuds and best open-ear earbuds for phone calls.

6. Sound, honestly

Neither of these is going to sound like a sealed earbud, and the reason is physics rather than engineering: without a seal, most low-frequency output escapes to the room before it reaches your eardrum. The question is only which one loses less.

SoundGuys called the OpenFit Pro Shokz's best-sounding open-ear earbuds yet, with stronger bass and less harshness than the OpenFit line before it, and gave it an MDAQS audio-quality score of 3.2 out of 5. On the Bose, the same publication scored MDAQS 2.3 out of 5 and listed sound quality as a con; GearLab measured a frequency response that follows its house curve for most of its range but with bass dropping off sharply, scoring bass 5.0 out of 10 and noting that pushing the app's bass slider to +8 helped only slightly.

So the Shokz wins sound by both labs' reckoning, and it wins it with the heavier housing and the bigger driver assembly that cost it the comfort round. That is the trade in one sentence. The physics, including what the person next to you hears, is in open-ear earbuds and sound leakage.

7. Glasses, hats and helmets

This is the quiet reason a lot of people end up with the Bose, and it has nothing to do with the spec sheet.

A hook occupies the groove behind your ear. So does the temple arm of a pair of glasses, so does the strap of a cycling helmet, and so does the edge of a beanie. Two objects, one groove. A 12.3 g hook is the thickest in the category, so the OpenFit Pro is the most likely of any open-ear we track to fight your frames.

A cuff clips the outer rim of the ear and touches nothing behind it, which clears glasses completely. The exception is a snow helmet, where a padded ear pad presses directly on the rim and the cuff becomes the worst design in the room — we worked through that inversion in best earbuds for skiing and snowboarding. For glasses specifically, the full breakdown is open-ear earbuds with glasses, and the mechanics of all three fit systems are in ear hook vs clip-on open-ear earbuds.

What the money buys on each side

We do not print prices in prose, because they move and a page that quotes one is stale by next week. Use the buy buttons for today's figures. What is stable is the shape: both of these sit in the premium bracket, the Bose second generation at the very top of it, the first generation and the OpenFit Pro below that and close to each other.

Spend it on the Shokz if any of these is true:

• Sweat is what kills your earbuds. IP55 against IPX4, and a dust digit against an X.
• You want noise reduction without a seal. It is the only open-ear here that has any, and 13 dB of mid-band is real even if it is not quiet.
• You take calls on the move. Three wind-resistant mics against two, and both labs agree on the direction.
• You care about sound more than about forgetting they are on. Both labs scored the Shokz higher.

Spend it on the Bose if any of these is true:

• Comfort is the actual problem you are solving. Half the weight, no contact behind the ear, and the highest comfort score of anything we have found independently tested in this category.
• You wear glasses all day. The cuff leaves the groove behind your ear empty.
• You want buttons. Both Bose generations have a physical button per barrel; so does the OpenFit Pro, which is why this is a tie rather than a reason.
• Your wearing is desk-and-street, not gym-and-rain. IPX4 is enough for a commute.

Which one to buy

OpenFit Pro for anyone whose earbuds have to survive training. It is the better-protected, the longer-lasting, the better-sounding and the better-calling product, and the noise-reduction mode is a genuine first in the category even though the measurements say “takes the edge off” rather than “quiet.” Full write-up: Shokz OpenFit Pro review.

Bose Ultra Open Earbuds for anyone whose last three pairs of earbuds all ended up on the desk after an hour. Take the first generation unless you specifically want the second generation's wireless charging and two extra hours — the cuff, the fit and the IPX4 rating are identical, and the first generation is the one both labs measured. Full write-up: Bose Ultra Open Earbuds review.

Neither, if you want the middle. There is an uncomfortable fact for both brands here: the Shokz OpenDots 2 is a 6.4 g cuff with IP57 buds and an IP54 case — Bose's comfort geometry with better protection than either product on this page — and it costs less than both. The head-to-heads are Bose Ultra Open vs Shokz OpenDots and OpenFit 2 vs OpenFit Pro, if the question is whether the Pro is worth it inside the Shokz line at all.