Ultrahuman Ring Air Review: Banned in the US, Still Legit in the UK
Quick answer: If you're reading this from the United States, this isn't the ring for you right now — a 2025 US International Trade Commission ruling put an exclusion order on the Ultrahuman Ring Air, and as of this writing (September 2026) it still cannot be legally imported into or sold in the US. This review is written for readers in the United Kingdom and European Union, where none of that applies: the ITC order is US customs law, not a safety recall, and Ultrahuman still sells the Ring Air through its own UK/EU store and through Amazon UK exactly as before. On the hardware itself — it's one of the lightest smart rings on the market, tracks sleep and HRV with no required subscription, and adds genuinely unusual extras like a Metabolic Score and an FDA-cleared AFib module, each with a real catch attached. For UK and EU buyers, we score it 8.3/10.
Here's the strange bit if you haven't run into it yet: type "Ultrahuman Ring Air" into Google from a US address, and you'll eventually land on a listing that flatly refuses to ship to you. Type the exact same thing from a flat in Manchester or an apartment in Berlin, and it just works — add to basket, next-day delivery, done. Same ring, same company, two completely different legal realities depending on which side of the Atlantic you're standing on. That split is real, it's not going away soon, and almost no review explains it clearly before getting to whether the ring itself is any good. This one does both.
Why Is the Ultrahuman Ring Air Banned in the US?
Short version: patents, not safety. Oura sued Ultrahuman (and, separately, RingConn) over patents covering the closed-loop titanium ring form factor, and in August 2025 the US International Trade Commission ruled in Oura's favor. The Commission issued exclusion and cease-and-desist orders barring the infringing rings from being imported into or sold in the US, and that order became final on October 21, 2025 after the standard Presidential review period closed without objection.
RingConn and Ultrahuman ended up on very different paths from that same ruling. RingConn settled — it reached a licensing deal with Oura that includes ongoing royalty payments, and the RingConn Gen 3 has kept selling in the US without interruption, which is why you'll still see it recommended elsewhere on this site. Ultrahuman didn't settle. It filed an appeal in the US and a counterclaim in India, both still active, and rather than wait for either to resolve, it engineered a workaround: a redesigned ring with a one-piece titanium housing, launched as the Ultrahuman Ring Pro. US Customs and Border Protection ruled in March 2026 that the Pro's new design falls outside the scope of the exclusion order, so it cleared customs and began shipping to US customers from mid-May 2026.
That's a genuinely different, newer product, though — not the ring this review covers. The original Ring Air remains excluded from US import. Retailers can sell through whatever inventory they already had in the country, but nothing new comes in, and by spring 2026 most of that leftover stock had already sold out. Existing US owners keep their app access, firmware updates and warranty support; they just can't buy a replacement or a second one domestically. None of this is us being cautious for the sake of it — it's the actual, current legal status, and it's worth knowing before you read a single spec below.
Can UK and EU Shoppers Still Buy It Legally?
Legally, yes, without any asterisk. The ITC only has jurisdiction over what crosses the US border — it has zero legal reach into the UK or the EU, and Ultrahuman still sells the Ring Air through its own regional storefronts, with the same warranty, app and support UK and EU buyers had before the US ruling existed.
Stock note (September 6, 2026): the Amazon UK listing (ASIN B0DP5FL5BK) is showing "Currently unavailable" as we publish this. The ring itself isn't hard to find, though — it's still listed at Currys, Argos and Costco UK, and directly at ultrahuman.com — this is an Amazon-listing gap, not a discontinued product. We've kept the Amazon UK link below in case it restocks, and every price and spec in this review is still checked against that listing.
One thing we won't do here is point US readers toward importing one anyway. The exclusion order specifically targets imports into the US, and bringing one in personally sits in exactly the gray area that order exists to close — not a workaround we're going to suggest. If you're US-based and want a comparable no-subscription ring today, our best smart rings with no subscription guide and the RingConn Gen 3 review cover what's actually available to you.
What Is the Ultrahuman Ring Air?
The Ring Air has been Ultrahuman's flagship since 2023 and it's now on its third hardware refresh, sold in six finishes — Bionic Gold, Raw Titanium, Aster Black, Matte Grey, Space Silver and a newer, pricier Brushed Rose Gold — across ten sizes (5 to 14). Ultrahuman ships a free sizing kit first, the same "wear it for a day before you commit" approach every serious ring maker now uses, because knuckle size and finger swelling make guessing a bad idea.
At 2.4 to 3.6 grams depending on size, it's noticeably lighter than an Oura Ring 4 — reviewers who've worn both back to back consistently call it the more forgettable ring on the finger, in the good sense. On Amazon UK, the listing title itself says "No App Fee for Standard Features", which is the honest summary: sleep, HRV, temperature, movement and recovery scoring all work indefinitely with no subscription. Where it gets more complicated is everything built on top of that baseline, which is where we're headed next.
What Does the Ring Air Actually Track?
The core sensor package is standard for a modern ring — PPG heart rate, HRV, skin temperature, motion, and blood oxygen — but Ultrahuman packages it into a few features worth understanding before you buy, because the marketing names oversimplify what's actually happening under the hood.
Metabolic Score Needs Hardware You Don't Already Own
Metabolic Score gets top billing in Ultrahuman's marketing, and it's easy to assume the ring produces it on its own. It doesn't. Metabolic Score only appears once you pair the ring with Ultrahuman's separate M1 continuous glucose monitor, which runs on an Abbott FreeStyle Libre sensor worn on your arm. In the UK, Ultrahuman's own pricing page lists M1 plans starting at £109 for a two-week sensor, with longer plans running higher. Skip the CGM, and the ring simply has no glucose data to score — this is the single most misleading gap between how the Ring Air is marketed and what it does out of the box, and we'd rather flag it now than have you notice it after buying.
Pulse Age Is a Wellness Estimate, Not a Blood Pressure Reading
The Ring Air also produces a metric called Pulse Age, part of a broader "Ultra Age" biological-age score Ultrahuman rolled out through 2025. Pulse Age estimates arterial stiffness using PPG data — heartbeat stability and pulse-waveform shape — as a proxy for cardiovascular aging. To be precise about what this is not: it is not a blood-pressure cuff measurement, Ultrahuman doesn't claim it is one, and you shouldn't treat it as clinical data. Think of it as a long-run trend line, updated weekly, not a number to bring to a doctor's appointment on its own.
AFib Detection Is Real, and It's an Optional Add-On
Ultrahuman's AFib detection carries genuine FDA clearance, which is more than most subscription-free rings on this site can say — Samsung's equivalent technology, for comparison, lives on the Galaxy Watch, not the Galaxy Ring. On the Ring Air, though, it ships as one of Ultrahuman's optional "PowerPlugs" modules rather than a feature every buyer automatically gets, alongside other add-ons like cycle tracking and a cardio-adaptability module. Some PowerPlugs are free; others carry a small one-time or ongoing fee. Check the current PowerPlugs list before assuming AFib detection is included the moment the ring arrives.
Battery: Real Numbers, Not Just the Spec Sheet
Ultrahuman quotes 4 to 6 days per charge. An NBC News reviewer who wore the Ring Air for months landed closer to 4 to 5 days in practice — a fair, believable gap between marketing and reality. Charging from empty takes roughly three hours, noticeably slower than the 60-to-90-minute charge times more common on rival rings, so it's worth topping up before a long trip rather than assuming a quick top-up will do.
How Accurate Is It? What Long-Term Testers Actually Found
We haven't worn this specific ring ourselves for this review, so rather than guess, here's what independent testers who tracked it for weeks or months against an Oura Ring 4 actually reported. The NBC News Select reviewer's side-by-side comparison found the Ring Air logged more wake events during the night than Oura and generally produced lower sleep scores overall — not necessarily less accurate, just a different scoring philosophy that reads slightly harsher. On outdoor runs, the same reviewer found the Ring Air made fewer GPS-related errors than the Oura Ring 4, and unlike Oura — which only lets you confirm a detected workout the next day, not later — the Ring Air lets you retroactively approve or correct a workout several days later, a small feature that matters more than it sounds once you've forgotten to confirm a Tuesday gym session by Thursday.
The same long-term test flagged real friction in daily use: the app leans on clinical jargon ("phase advance," "phase decay," "sympathetic activation") that's genuinely confusing if you're new to wearables, the visual design is inconsistent across different metric screens, and syncing can take 8 to 20 seconds during which the app locks you out of the data you just opened it to see. Stuff's UK review adds a physical complaint worth knowing before you pick a finish: the Ring Air is comfortable and light, but the titanium coating is prone to scratches, especially on the lighter colorways — this is a ring you'll want to take off before anything involving a barbell or a climbing wall, same as every other smart ring on this site.
Ultrahuman Ring Air vs RingConn Gen 3 vs Oura Ring 5: Which Should UK/EU Buyers Choose?
| Ring | Price (UK/EU, Sept 2026)* | Subscription | Battery | Best for |
|---|---|---|---|---|
| Ultrahuman Ring Air | ~£315 (up to £379 for Brushed Rose Gold) | None for core tracking; CGM & some PowerPlugs cost extra | 4–6 days (4–5 in practice) | Lightest ring + metabolic-health extras, UK/EU buyers only |
| Oura Ring 5 | ~£399+ | ~£5.99/mo (~£70/yr) for full features | ~6–9 days | Most polished app & ecosystem |
| RingConn Gen 3 | ~$349 in the US — no confirmed UK Amazon listing | None | 10–14 days | Longest battery; check ringconn.com for UK/EU stock |
| Samsung Galaxy Ring | ~£399, often ~£299 | None, ever | Up to 7 days | Samsung/Android households |
*Reference prices at the time of writing; all four change often — check the live listings. Full comparison of the two subscription-free leaders: Oura Ring 5 vs RingConn Gen 3; every no-subscription ring ranked together: best smart rings with no subscription.
The honest way to read that table: RingConn Gen 3 is still Kudomax's top-rated no-subscription ring overall, and it beats the Ring Air on pure battery life by a wide margin — but at the time of writing we couldn't verify a working UK Amazon listing for it either. Between the two, availability is currently a wash: check the live listing (or Ultrahuman's own UK/EU store, and Currys/Argos/Costco UK for the Ring Air) before you decide based on spec sheets alone.
Ultrahuman Ring Air Pros and Cons
- ✓ One of the lightest rings available — 2.4–3.6g, genuinely disappears on your finger within days
- ✓ Sleep, HRV, temperature and recovery tracking work indefinitely with no subscription
- ✓ FDA-cleared AFib detection available as an add-on — rare in this price range and category
- ✓ Fewer GPS errors on runs and more flexible retroactive workout logging than Oura Ring 4, per independent long-term testing
- ✓ Fully legal and officially warrantied for UK and EU buyers, widely stocked across UK retailers (Amazon UK stock varies)
- ✕ Still excluded from the US market — irrelevant to UK/EU buyers today, but a sign of ongoing legal uncertainty around the brand
- ✕ "Metabolic Score" needs a separate M1 glucose monitor from £109 — not something the ring alone provides
- ✕ App terminology is jargon-heavy and confusing for first-time smart ring buyers
- ✕ Charges slower than most rivals — about 3 hours from empty
- ✕ Titanium coating scratches more easily than reviewers expected, especially on lighter finishes
Who Should Buy the Ultrahuman Ring Air — and Who Shouldn't?
Buy the Ultrahuman Ring Air if you…
- Live in, or regularly ship to, the UK or EU — this is the market where the ring is fully legal, supported and easy to order
- Want Oura-adjacent sleep and recovery tracking without a required monthly fee
- Want the lightest ring you can buy, and don't mind a titanium finish that needs some care
- Are curious about metabolic health and are fine adding a CGM later — the ring is already built to support one
Look elsewhere if you…
- Are based in the US → this exact product isn't legally available to you right now; see our RingConn Gen 3 review or the full no-subscription ring guide instead
- Want the most polished, least jargon-heavy app, and don't mind paying for it → Oura Ring 5
- Want the longest battery life of any major ring → RingConn Gen 3 roughly doubles it, if you can confirm it ships to you
- Already carry a Samsung Galaxy phone → the Samsung Galaxy Ring integrates tighter with your ecosystem
- Aren't sure a ring beats a band for your routine at all → start with our ring vs. band guide
Is the Ultrahuman Ring Air Worth It? The Verdict
Strip away the US legal drama and what's left is a genuinely good, mature smart ring — light, subscription-free at its core, and honest enough in its own UK pricing page about what costs extra. The sleep and recovery tracking holds up against Oura in independent long-term testing, the AFib option is a real differentiator most competitors don't offer at any price, and for a UK or EU buyer, none of the US ITC mess actually touches you. What keeps it at 8.3/10 rather than higher: an app that talks over new users' heads, a marquee feature (Metabolic Score) that quietly requires buying more hardware, and a finish that scratches faster than it should for the price.
If you're in the UK or EU and you've been comparing this against Oura Ring 5 and RingConn Gen 3, the Ring Air earns its spot on the spec sheet: lighter than both, no required subscription. Just confirm stock before you commit — the Amazon UK listing is currently unavailable, so plan on Currys, Argos, Costco UK or ultrahuman.com directly. See how it and the rest of the field compare in our full ring and band lineup.
8.3 / 10
- Best for: UK and EU buyers who want Oura-adjacent sleep tracking with no required subscription
- Standout: among the lightest rings available, with FDA-cleared AFib detection as an option most rivals don't offer
- Biggest drawback: "Metabolic Score" needs a separate CGM purchase, and the app's jargon takes getting used to
- Availability: not legally sold or importable into the US as of this writing; fully legal in the UK/EU, though the Amazon UK listing is currently out of stock — Currys, Argos, Costco UK and ultrahuman.com have it
- Bottom line: for UK and EU readers specifically, one of the better no-subscription rings you can actually buy right now
Ultrahuman Ring Air FAQ
Is the Ultrahuman Ring Air banned in the US?
Yes, as of this writing. A 2025 ITC ruling found it infringed Oura patents and issued an exclusion order blocking new imports and sales in the US, effective October 21, 2025. Ultrahuman is appealing and has since launched a redesigned Ring Pro that US Customs cleared in March 2026 — a different, newer product. The original Ring Air covered in this review remains excluded from the US market.
Can I still buy an Ultrahuman Ring Air in the UK or EU?
Yes. The US exclusion order only covers US customs and import law; it has no legal effect in the UK or EU. Ultrahuman sells the Ring Air through its own UK/EU store and through Amazon UK exactly as before, with normal warranty and app support.
Does the Ultrahuman Ring Air measure blood pressure?
No. Its Pulse Age metric, part of the broader Ultra Age score, estimates arterial stiffness from PPG heartbeat and pulse-waveform data as a wellness trend — not a blood-pressure cuff reading, and Ultrahuman doesn't market it as one.
Do I need a subscription for the Ultrahuman Ring Air?
No, not for the core ring. Sleep, HRV, temperature, movement, recovery and Pulse Age all work with no monthly fee — the Amazon listing itself is titled "No App Fee for Standard Features." Optional PowerPlugs (like the AFib module) and the separate M1 glucose monitor are paid add-ons, not requirements.
What is Metabolic Score and do I need extra hardware for it?
It's not something the ring generates alone — it requires pairing with Ultrahuman's separate M1 continuous glucose monitor (an Abbott Libre sensor). In the UK, M1 plans start at £109 for a two-week sensor. Skip the CGM and the ring won't show a Metabolic Score at all.
How long does the battery really last?
Ultrahuman claims 4 to 6 days. A long-term NBC News reviewer got closer to 4 to 5 days in practice, with a full charge from empty taking roughly 3 hours — slower than most rival rings.
Ultrahuman Ring Air vs RingConn Gen 3 — which is better for UK buyers?
For UK/EU shoppers specifically, the Ring Air has the clearer purchase path — it's sold directly on Amazon UK. RingConn Gen 3 is Kudomax's top-rated no-subscription ring overall and roughly doubles the battery life, but at the time of writing we couldn't confirm a UK Amazon listing for it, so check RingConn's own site for stock before assuming it ships to you.
Sources
- Oura — Oura Secures Decisive Legal Victory with ITC Patent Ruling: the ITC ruling, exclusion/cease-and-desist orders, RingConn settlement.
- TechRadar — Ultrahuman smart rings have just been banned in the US: exclusion order details and RingConn's separate outcome.
- The Gadgeteer — America Banned This Smart Ring, It Just Came Back: Ring Pro's redesigned housing and US Customs clearance, March 2026.
- Boomset — Ultrahuman Ban and Lawsuit: Full Update: confirms Ring Air is no longer being imported or restocked in the US, appeal status.
- Athletech News — Ultrahuman Can Sell in US Market Again Following ITC Resolution: Ring Pro pre-orders and shipping timeline.
- TechCrunch — Ultrahuman's smart ring gets FDA-approved AFib detection: AFib clearance background.
- Gadgets & Wearables — Ultra Age lands on Ultrahuman Ring Air: Pulse Age and Ultra Age methodology.
- NBC News Select — I tested the Ultrahuman Ring Air for months: long-term accuracy, battery and app-usability findings cited in this review.
- Stuff — Ultrahuman Ring Air review: the smart ring to buy?: UK pricing, finishes, and comfort/scratch-resistance notes.
- Ultrahuman — UK pricing page: M1 CGM pricing used for the Metabolic Score cost figures in this review.