









📏 Find your perfect fit, wear your wellness.
The Ultrahuman Ring Sizing Kit helps you select the ideal size (5-14) for the Ultrahuman Ring AIR, a sleek, ultra-light (2.4g) smart ring designed for continuous health tracking. By wearing the sizing ring for 24+ hours, users ensure a precise fit that maximizes comfort and accuracy in monitoring sleep, heart rate, HRV, skin temperature, and workout metrics.





















| ASIN | B0D8HYRS46 |
| Additional Features | Activity Tracker, Custom Activity Tracker, Heart Rate Monitor, Multisport Tracker, Sleep Monitor |
| Age Range Description | Adult |
| Band Color | black |
| Band Material Type | titanium |
| Battery Average Life | 6 days |
| Battery Capacity | 24 |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 2 Hours |
| Battery capacity | 24 |
| Best Sellers Rank | #67,420 in Sporting Goods ( See Top 100 in Sporting Goods ) #379 in Activity Trackers |
| Brand | ULTRAHUMAN |
| Built-In Media | Type C to Type C Cable, Ultrahuman Ring AIR, Wireless Charging Dock |
| Case Material Type | Titanium |
| Clasp Type | Ring |
| Closure Type | Pull On |
| Color | Matte Black |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone, Tablet, Laptop |
| Compatible Phone Models | All current smartphone models |
| Connectivity Technology | Bluetooth |
| Connectivity technology | Bluetooth |
| Customer Reviews | 4.4 out of 5 stars 1,780 Reviews |
| Display Type | Analog |
| External Testing Certification | Não aplicável |
| GPS Geotagging Functionality | No GPS |
| Global Trade Identification Number | 08906184870700 |
| Human Interface Input | Unknown |
| Item Dimensions | 17 x 15 x 7 centimeters |
| Item Weight | 2.4 Grams |
| Language | French |
| Manufacturer | Ultrahuman Healthcare Pvt Ltd |
| Manufacturer Contact Information | ULTRAHUMAN HEALTHCARE PVT LTD No. 2, Sy.No. 49/1 & 49/3 Am industrial area Bangalore-560068 |
| Memory Storage Capacity | 0.5 MB |
| Memory storage capacity | 0.5 MB |
| Metrics Measured | Heart Rate Monitor |
| Model Name | RA-AA-Size13-US |
| Model Number | Sizing Kit 3 |
| Operating System | Ultrahuman App |
| RAM Memory Installed | 0.5 MB |
| Shape | Round |
| Special features | Activity Tracker, Custom Activity Tracker, Heart Rate Monitor, Multisport Tracker, Sleep Monitor |
| Sport Type | Cycling, Fitness, Multi-Sports, Swimming, Yoga |
| Style Name | Modern |
| Supported Application | Custom Activity Tracker, Fitness Tracker, Heart Rate Monitor, Sleep Monitor, Stimulant Window Tracker |
| Target Audience | Unisex Adult |
| Warranty Description | 1 Year Manufacturer |
| Warranty Type | Limited |
| Water Resistance Depth | 1 Meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IPX8 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
| Wireless communication standard | Bluetooth |
N**8
Great idea to get your correct size because of the big investment you;re making
I think the whole idea of the “Air” finger ring and sizing first is the right thing to do. You pick your normal size or one that feels most comfortable for you all day and throughout the night. This way it will give you a true feel for the correct size ring. This is a huge investment and quite honestly I was very impressed when I saw what was sent and how. As you will see from my photos, the ring sizers show on the indicator card enclosed on top that there are several finishes, and then underneath in the box itself are the prototype rings, with a spot inside each one where the part of the ring goes out a bit to mimic what the actual ring would be like. All the finishes all look to be scratch resistance, the color choices are very nice and they also have silicone covers to help preserve the rings, yet not interfere with the accuracy, heart rate information and the over all integrity of the functionality of the rings information itself. I have three things I have some issues with not with the item but for what these are preparing you for. Even though they offer 5 finishes in a large array of sizes as I said with the silicone covers if needed, they don’t have an actual color such as a light pink that for myself as a woman I would love. Also, I guess this is my biggest issue, with NYState take, a ring in my size which is second to smallest at a 6 women’s, I would be paying almost $400. I know you say well for your health it’s worth it but quite honestly, I have a pacemaker for my heart and an iOS watch that also tracks this same information. But for me I happen to think after suffering 2 heart attacks already, this is important. I will follow up when I can find out if I pay this whole amount of my insurance will reimburse me for part if not all. I have Medicare and an insurance from my husband also. Over all I did feel this deserved a 5 star review because I was even nicer than expected.
T**T
Leider enttäuscht
Gute Qualität, aber einige Funktionen nur über Abo!!! In den Beschreibung steht eindeutig keine Abos. Das ist Betrug am Kunden. Blutsauersoff ist bewusst durch firmware deaktiviert, wegen Akkulaufteit. Aktivieren nicht möglich. Also wer seien Atmung im Schlaf überwachen möchte und die Sauerstoffsättigung über Nacht wissen möchte, der hat so wie ich den Ring umsonst gekauft. Schade. Wer gerne Lebenstipps zum Thema Schlaf, Ernährung, Bewegung haben möchte der ist gut beraten.
L**S
Great but a power hog
The item looks as expected, and is generally easy to use, you just put a ring on. I’ve rated it 4 stars because to get readings with no gaps I needed to set it to turbo mode and that basically means recharging every day. That’s not an issue for me really, I can do that whilst I’m organising breakfast etc and it’s charged by the end of that, but if you’re expecting 4-5 days it’s a bit of a difference! Otherwise, it tracks HR, skin temperature, steps etc. There are plugins that are mostly free to extend functionality, and one I’ve subscribed to which monitors heart health more closely. Apart from the extra recharges, I’m very happy with it.
M**H
Inaccurate activity tracking
This ring considering my bike riding also as steps
A**U
Super util
Llegó a tiempo. Muy recomendado el kit si quieres comprar tu anillo sin estar adivinando la talla
Trustpilot
2 weeks ago
2 weeks ago