Interested in reviews of Ultrahuman Ring Air Aster Black size 9? It got 3.8 out of 5 stars from our customers. Find specific customer reviews of Ultrahuman Ring Air Aster Black size 9 below. We will appreciate if you also share your experiences with Ultrahuman Ring Air Aster Black size 9 after purchasing.
Rated 19/11/2025, variant Ultrahuman Ring Air Aster Black size 9
Verified purchase
works great
The ULTRAHUMAN support directly in the app is perfect - they have sent me a new ring (3 times already) when failures due to long use, they also sent me a charger when they released a new one
alza does not give free sizing kit.
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Jaroslav, Brno
Rated 17/01/2025, variant Ultrahuman Ring Air Aster Black size 9
Verified purchase
measures well and accurately
hard to hit the size even with the size kit
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Anonymous customer
Rated 08/01/2025, variant Ultrahuman Ring Air Aster Black size 9
Verified purchase
My friend is thrilled with it.
Everything works as it should
Sleep
Stress
Recommendations
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Ondřej, Nošovice
Rated 30/07/2024, variant Ultrahuman Ring Air Aster Black size 9
Verified purchase
I didn' t have high expectations, but I was surprised. Even though I couldn' t wear rings before, I got used to Ultrahuman and wear them regularly. From the date of purchase until now, there have been 20 updates to the application, adding new features.
Minimal damage after half a year
Application
No subscription (except new extra features)
Frequent updates/new features
Czech translation of the application
Price
Battery life max 4 days
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Petr, Luby
Rated 18/02/2024, variant Ultrahuman Ring Air Aster Black size 9
Verified purchase
I've been using the ring for over a month. I tried to replace the Apple watch ultra with it for daily 24h measurements, including training etc. With AW I was quite worried about breakage and when I was working on them, they were falling down. I have no concerns with the ring, it takes care of all the logging and measuring on its own without me having to check it. Mostly I don't know anything about him.
In android I have more translated things in the app
Fold 5 - I find that and a better overview of the app
There is English written for the ring, but the iOS is minimal and a bit chaotic. No problem for someone with good AJ.
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Anonymous customer
Rated 26/01/2024, variant Ultrahuman Ring Air Aster Black size 9
Verified purchase
processing
light weight
design
unboxing experience (I would compare it to Apple)
detailed applications
no subscription fee like competitors
Czech translation of the application
support
battery life
the charging station is constantly lit (annoying at night. )
my piece had problems with sleep detection (sometimes it detected sleep only from 2-3 in the morning and in the morning completed sleep from 22 as a nap; the next day the app kept alerting me how it was possible that I was still alive with 3 hours of sleep)
complex UI applications (some might find the application complex)
not much of a translation (the translation often doesn't match or is mixed with the English)
charging speed
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Tomáš, Česká Lípa
Rated 05/07/2026, variant Ultrahuman Ring Air Matt Grey size 9
Verified purchase
It was absolutely impossible to connect it to the phone; since you sell second-hand goods at Alza, it would be good to check whether the previous owner had unpaired it correctly
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Jakub, Brno
Rated 09/06/2026, variant Ultrahuman Ring Air Matt Grey size 7
Verified purchase
I’m writing this review after more than two years of use; I only take it off my finger when I’m charging it. I don't understand these reviews saying it lasts a month and so on; I doubt I was just lucky. I am extremely satisfied with the product.
collects and analyses data effectively
A nice app – free
After two years, the battery life has dropped to a maximum of two days
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Robert, Senomaty
Rated 07/06/2026, variant Ultrahuman Ring Air Bionic Gold size 9
Verified purchase
There is probably no point in listing the pros, because there is only one negative that will discourage you from buying the ring. I bought the ring for my wife. After about 2 months from the date of purchase it was charged every 2 days and after 3 months it died, not even one day. Ring returned to Alza. Now I see that in the meantime the complaint rate has risen to almost 20%. This is certainly not a product that deserves attention. I myself have a Samsung ring, with regard to the ownership of the phone. Problem-free ring, which I recommend to everyone who owns a Samsung phone.
Battery
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Pavel, Křenice
Rated 31/05/2026, variant Ultrahuman Ring Air Raw Titanium size 14
Verified purchase
druhý se pokazil
nafouklá baterie
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