






💍 Unlock your health potential—wear the future on your finger.
The ULTRAHUMAN Ring AIR (Certified Renewed) is a sleek, lightweight smart ring designed for comprehensive health and fitness tracking. Available in 10 precise sizes via a dedicated sizing kit, it monitors sleep, activity, stress, heart health, and women’s health metrics including ovulation and pregnancy. Each ring is professionally inspected, carries a 1-year warranty, and offers personalized biomarker insights to empower millennial professionals to optimize wellness with style and confidence.























| ASIN | B0D7956WT1 |
| Additional Features | Activity Tracker |
| Band Material Type | Silicone |
| Battery Average Life | 6 Hours |
| Battery Capacity | 24 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Best Sellers Rank | #152,128 in Electronics ( See Top 100 in Electronics ) #355 in Smart Rings |
| Brand | ULTRAHUMAN |
| Built-In Media | Type C to Type C Cable, Ultrahuman Ring AIR, Wireless Charging Dock |
| Color | Sizing Kit |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone, Tablet |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Customer Reviews | 4.4 4.4 out of 5 stars (357) |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Touch Bar |
| Item Weight | 3.7 Grams |
| Language | German |
| Manufacturer | Ultrahuman Healthcare Pvt Ltd |
| Memory Storage Capacity | 0.5 MB |
| Metrics Measured | Activity Tracker, Cycle Tracker, Heart Rate Monitor, Multisport Tracker, Sleep Duration |
| Model Name | Ultrahuman Ring AIR |
| Model Number | UHRA-BRG-05-WBSB |
| Operating System | Ultrahuman App |
| Shape | Round |
| Sport Type | Cycling, Fitness, Multi-Sports, Swimming, Yoga |
| Supported Application | Activity Tracker, Cycle Tracker, Heart Rate Monitor, Multisport Tracker, Sleep Monitor |
| Warranty Description | 1 Year Manufacturer, 1 Year Extended |
| Warranty Type | Standard/Full, Extended |
| Water Resistance Depth | 3 Meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IPX8 |
| Wearable Computer Type | Smart Ring |
| Wireless Compability | Bluetooth |
K**A
Más fácil para poder saber tu talla para el ultrahuman ring
D**I
Works great!
Perfect price to be able to buy before hand before ordering the ring itself. They fit exactly like the actual ring and I’m very pleased with my sizing results.
K**M
Easy to wear and use
I like the ring, the sizing box came first so I could look at the ring colors and try the fit first, it is customizable for my health progress and I can choose to add things to help keep track I would definitely recommend this to others
A**L
Can’t really complain. It is what I said it is. I went with a different smart ring because I was in between sizes but it was a good product overall
A**A
Ring size didn’t match actual ring
G**A
I’m really glad I purchased this ring sizing Kit before ordering the actual ring. The sizes are quite different from standard ring sizes, so trying the sizer first truly helped me avoid guesswork. I wore the sizing ring for a full 24 hours as recommended, keeping the engraved number toward my palm, and it gave me a clear idea of how the ring would feel throughout the day and even during sleep. I tested it on my index and middle finger and found the perfect fit where the ring didn’t rotate freely, ensuring better comfort and accurate tracking. Once confident about my size, ordering the Smart Ring was easy. I also loved checking out the colour swatch card in the box it made choosing between Aster Black, Space Silver, and other premium finishes exciting. The sizing kit may be simple plastic, but knowing the actual ring is crafted from space grade titanium with a tungsten carbide coating makes the experience feel truly premium and worth it.
P**H
This sizing kit is very useful and easy to use. It includes multiple plastic ring sizers that cover all common sizes, with clear numbers on each ring for easy identification. The quality is excellent, made from durable and comfortable material.
T**E
These are great for getting a ring size (if full size) so you are not wasting time ordering and not fitting and they are free
Trustpilot
5 days ago
3 weeks ago