












📏 Nail your perfect fit, unlock your best self.
The ULTRAHUMAN Ring AIR Sizing Kit offers 10 distinct sizes (5-14) with a 24-hour overnight trial to guarantee the perfect fit for your smart wearable ring. Designed for millennial professionals prioritizing health, it supports advanced sleep, recovery, and workout tracking through Bluetooth connectivity and the intuitive Ultrahuman App. Lightweight at just 3.7g, it ensures all-day comfort while delivering precise biometric insights to optimize your wellness journey.





















| ASIN | B0CNRDLFHJ |
| Batteries | 1 Lithium Polymer batteries required. |
| Best Sellers Rank | #155 in Fashion ( See Top 100 in Fashion ) #3 in Ring Sizers |
| Color | Sizing Kit |
| Connectivity technologies | Bluetooth |
| Customer Reviews | 4.2 4.2 out of 5 stars (3,121) |
| Date First Available | 17 January 2024 |
| GPS | No GPS |
| Human interface input | Buttons |
| Item Weight | 3.7 g |
| Item model number | UHRA-MG-14 |
| OS | Ultrahuman App |
| Other display features | Sports |
| Product Dimensions | 1.6 x 0.81 x 1.6 cm; 3.7 g |
| Scanner Resolution | 240 x 240 |
| Special features | Sleep Monitoring |
| Whats in the box | Type C to Type C Cable, Ultrahuman Ring AIR, Wireless Charging Dock |
U**Q
Accurate sleep insights in a very comfortable ring
I’ve been using the Ultrahuman Ring for some time now, and it has really helped me understand my sleep patterns better. The insights around sleep stages, recovery, and readiness are very useful and easy to follow. The app is clean, intuitive, and gives actionable guidance rather than just numbers. Battery life is solid, and the ring is comfortable enough to wear all day and night. Overall, a great product for anyone serious about improving sleep, health, and recovery.
H**R
Experience
I enjoy my health and wellness journey with the ring. I am more aware about my body and wellness.
S**Y
Excellent
It gives great insights specially on rem sleep and social jet lag
S**Z
Worst support, not worth the stress.
The ring turns of after one day and the support is not helping me. Now the ring turns not on anymore and still no help. Support is telling me to update the ring wich is empty and so not able for an update. Better pay more money for a better brand with good customer aupport
E**E
Good ring
My first ring died quickly but Ultrahuman instantly sent me a new one!
E**E
Sizing and feeling identical to the real ring
If you are considering the UltraHuman rings. This is the perfect sizing and test kit. Take your time and wear several sizes for a few days… feels the same as the real ring.
R**R
Great
Great for the price
M**F
Geneeal
The ring is good but some features are missing which is of the paid subscription so not everything is free. Also the battery life is less than 3 days.
M**I
手首にウェアラブルバンドを使ってたのですが、寝てる時につけているのが嫌だったので、スマートリングにしました、軽くて付け心地もよく、今のところは気にいってます。 スマートリングのブランドとしては、海外ではそれなりに人気があるようですね。 アプリの表示項目は多くて、よくある活動量以外に回復や睡眠は細かいデータが表示されます。 睡眠改善が目的で購入したのですが、朝に振り返ると、前日の活動量や飲酒、寝た時間の影響など良かったり悪かった気付きがあります。 またPowerplugsといわれる追加機能で、睡眠に関連するようなカフェイン摂取の推奨時間帯がみれたり、日光浴の時間記録、スマホのスクリーンタイムの可視化、体内時計のリズムなどいろいろな機能があり、まだ上手く使いこなせてないですが、睡眠の質向上に活かせたらなと思ってます。 バッテリーは3日前後といった感じです、追加機能をオンにしてたり、アプリもよく見るほうだと思うので、仕事中に座ってるときに2、3日に1回充電してます。 リングの中には安いのもいろいろあるようですが、データが数値やグラフで細かく表示され、追加機能もありお値段するだけの高機能なリングだなと思ってます。月額料金がかからないのもいいですね。 睡眠改善と、回復も意識して使い続けたいなと思います。
V**T
Goed maar na passen nutteloos
J**O
llevo usándolo 3 meses y es parte de mi rutina diaria. La batería dura mucho y las métricas son parecidas a law del Apple Watch así que ya no dependo del reloj tanto. Y estéticamente es guapisimo
A**.
Mil veces mas cómodo que un reloj inteligente
L**A
I bought it to size my finger for the smart ring, and the size was accurate. Also, you get to wear it to test the original ring.
Trustpilot
Hace 2 días
Hace 2 meses