Smart rings are the new wearable tech obsession. The Ultrahuman Ring Air, made of titanium with a protective tungsten carbide coating, is feather-light, tracks sleep, movement, recovery, temperature and HRV, while looking like a minimalist piece of jewelry. For those who want less screen and more data - without the mandatory subscription.
Smartwatches ruled our wrists for years until it suddenly became clear: the finger has more arteries than the wrist, making it a better location for measurements. The ring has grown from a fashion accessory to a silent laboratory that collects measurements while you sip your coffee or sleep soundly. Ultrahuman Ring Air It's exactly that kind of thing – you only notice it when you open the app and get the feeling that your body has its own control panel.
Titanium – strong as armor, light as nothing
The case is made of titanium with a tungsten carbide coating, and the interior is made of hypoallergenic epoxy. This is not “bling”, this is industrial minimalism that can withstand everyday use. The ring remains inconspicuous: it is approximately 8.1 mm wide, 2.45–2.8 mm thick (depending on the size) and weighs only 2.4–3.6 g. It is available in several finishes, including “Raw Titanium”, if you are close to Bond’s aesthetic of “tool, not trophy”. Water resistance? Up to 100 m (with the official recommendation not to keep it continuously underwater for too long).
What it measures – and why you should care
Ultrahuman Ring Air serves you useful metrics every day, without a constant screen and with few distractions:
- Sleep: REM, deep and light stages, and trends that help regulate routines.
- Heart rate and HRV: variability (HRV) as a signal of regeneration and stress; heart rate is recorded periodically throughout the day.
- Skin temperature: Subtle deviations hint at illness or overload.
- Movement and regeneration: “nudges” for rest or activity, along with circadian rhythm.
- Women's health: temperature-based ovulation prediction.
- AFib detection: via PowerPlugs (FibriCheck) add-on – a paid “premium” module that is regulatory approved in some regions.
Note: Ring Air is not a medical device; the data is for wellness, not diagnosis.
Autonomy that won't get on your nerves
Typical battery life is 4-6 days per charge. Enabling Chill Mode can extend battery life by up to ~35% %. Charging to full capacity typically takes around 90-120 minutes, depending on the charger. The ring is designed to last around 500 cycles before capacity noticeably decreases.
App: less screen, more insight
The app plots clear graphs for sleep, movement, HRV, and temperature, and suggests micro-steps you can take today. In practice, this means that based on the previous night and your circadian rhythm, it advises you whether to tighten your arc or shorten your afternoon. In early versions, the app was sometimes too complex, but Ultrahuman regularly updates its features.
User reality
The Ring Air is designed for 24/7 use. Despite its very tough coating, the manufacturer advises against wearing it while lifting heavy weights or handling metal – not because it’s a given that the ring is durable, but because weights and bars are even tougher. Minimalism comes at a price: there’s no screen and no “live” sports metrics like on sports watches, but for sleep and recovery, this is often an advantage, not a disadvantage.
How does it compare to the competition?
Ultrahuman competes with the biggest. Oura is synonymous with sleep, while RingConn is synonymous with a subscription-free battery and a portable charging case. Where does the Air fit into this story? With a combination of weight, titanium durability, accurate temperature, and well-designed recommendations, the angle is clear: less noise, more signal.
| Model | Weight | Autonomy | A special feature |
|---|---|---|---|
| Ultrahuman Ring Air | 2.4–3.6g | ~4–6 days | Titanium + tungsten coating; circadian rhythm; optional AFib via PowerPlugs |
| Our Ring (Gen 3/4)* | 4–6 grams | up to ~7 days | Most robust sleep analysis; requires membership for features |
| RingConn Gen 2 | ~2–3g | ~10–12 days | No subscription; portable charging case with multiple charges |
*Oura Membership: from ~€5.99/month; Oura is waterproof to 100m, similar to the Air. RingConn claims up to 12 days and includes a case/charger that can hold multiple charges.
Price and availability
In the USA it costs Ring Air $349 (with included sizing kit). In the EU, the final price is typically around €379 (incl. VAT); the final price varies by country and delivery. The core features are free of monthly subscription fees, but some advanced PowerPlugs (e.g. AFib) are paid (~$4.90/month) and only available in certain regions. They ship globally; in many countries, sales and logistics are handled by Amazon.
Verdict: Less glitter, more data
Ultrahuman Ring Air is a piece for anyone who is closer to zen than circus. There is no screen, no notifications for every message, but there is a silent, highly accurate layer of data about your body. If you are looking for a ring that does not scream, but still very clearly tells you when you are ready to train and when it is time to rest, the Air is a reliable ally. And yes, in raw titanium, even James Bond would wear it without shame.