---
product_id: 660215837
title: "ULTRAHUMAN Ring AIR - Smart Ring | No App Subscription Fee | Size First with Sizing Kit | Sleep, Activity & Heart Rate Tracking | Fitness Ring for Men & Women"
brand: "ultrahuman"
price: "£0.85"
currency: GBP
in_stock: false
reviews_count: 5
url: https://www.desertcart.co.uk/products/660215837-ultrahuman-ring-air-smart-ring-no-app-subscription-fee-size
store_origin: GB
region: United Kingdom
---

# 24+ hrs wear test for perfect fit Optimized finger placement for accuracy 10 custom sizes (5-14) ULTRAHUMAN Ring AIR - Smart Ring | No App Subscription Fee | Size First with Sizing Kit | Sleep, Activity & Heart Rate Tracking | Fitness Ring for Men & Women

**Brand:** ultrahuman
**Price:** £0.85
**Availability:** ❌ Out of Stock

## Summary

> 📏 Find your perfect fit, wear your wellness.

## Quick Answers

- **What is this?** ULTRAHUMAN Ring AIR - Smart Ring | No App Subscription Fee | Size First with Sizing Kit | Sleep, Activity & Heart Rate Tracking | Fitness Ring for Men & Women by ultrahuman
- **How much does it cost?** £0.85 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/660215837-ultrahuman-ring-air-smart-ring-no-app-subscription-fee-size)

## Best For

- ultrahuman enthusiasts

## Why This Product

- Trusted ultrahuman brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Wear It Your Way:** Recommended on index, middle, or ring finger for optimal comfort and advanced sleep tracking.
- • **Smart Recovery Insights:** Unlock your body's recovery score by tracking HRV and skin temperature for smarter wellness decisions.
- • **Precision Fit, No Guesswork:** Use the sizing kit overnight to nail your perfect Ultrahuman Ring AIR size before buying.
- • **Tailored Comfort for 24/7 Wear:** Designed for all-day and night comfort with a notch-less, ultra-thin profile weighing just 2.4g.
- • **Workout Mode for Peak Performance:** Track heart rate and intensity across multiple sports to elevate your fitness game.

## Overview

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.

## Description

Product description "Step into a new era of health monitoring with the Ultrahuman Smart Ring. Designed for both men and women, this sleek fitness ring is your perfect companion for a healthier, more balanced life. Combining cutting-edge technology with sophisticated design, it offers comprehensive insights into your sleep, recovery, and overall wellness. **The Ultimate Form Factor for Sleep and Recovery Tracking** **Unmatched Accuracy for Health Tracking** Experience the unparalleled accuracy of fingertip biomarker data. Unlike wrist-based wearables, the Ultrahuman Smart Ring leverages the higher blood flow and arteriole density of your fingers, ensuring precise readings of your vital signs. Whether you're monitoring your sleep stages, heart rate variability (HRV), or skin temperature, trust in the superior precision that only a smart ring can provide. **Featherlight Design for Ultimate Comfort** At just 2.4 grams, this smart ring is 11 times lighter than typical smartwatches, making it one of the lightest fitness trackers on the market. Its hypoallergenic smooth inner lining ensures a comfortable fit, so you can wear it all day and night without even noticing it's there. The Ultrahuman Smart Ring is meticulously crafted to blend seamlessly into your lifestyle, offering a barely-there feel that doesn’t compromise on durability or style. **Master Your Sleep** Unlock the secrets to a better night's rest with the Ultrahuman Smart Ring. Track your sleep stages in detail and receive an everyday sleep score to gauge the quality of your rest. Discover what affects your sleep patterns and access personalized tools to enhance your sleep quality. From understanding your REM cycles to pinpointing disruptions, this smart ring provides the insights you need to wake up refreshed and ready to take on the day. **Dynamic Recovery Insights** Empower your recovery with real-time analysis of key physiological markers. The Ultrahuman Smart Ring's Dynamic Recovery feature gives you a comprehensive Recovery Score, showing how well your body is recuperating from daily stresses. By monitoring factors such as sleep, stress rhythm, skin temperature, and HRV, this smart ring helps you optimize your recovery with scientifically-backed techniques like power naps and breathwork exercises. **Your All-in-One Wellness Solution** The Ultrahuman Smart Ring is more than just a sleep tracker or step tracker; it's a holistic wellness tool designed to enhance every aspect of your life. Whether you're looking to improve your fitness levels, better manage stress, or simply understand your body's needs, this smart ring is your go-to device for comprehensive health monitoring. Discover the future of personal wellness with the Ultrahuman Smart Ring – the ultimate fusion of technology and comfort, designed to help you live your healthiest life." Manufacturer Contact Information ULTRAHUMAN HEALTHCARE PVT LTD No. 2, Sy.No. 49/1 & 49/3 Am industrial area Bangalore-560068

Review: Essential Precision for a Life-Changing Wearable - The "Why" Behind the Kit Smart rings are not like traditional wedding bands. Because they are packed with sensors, the Ultrahuman Ring AIR has a slightly different internal profile that requires a perfect fit for accurate data. I ordered this kit to ensure I didn't waste time with the wrong size, and I’m glad I did—I ended up being a size 9, though I typically wear a size 10 on my index finger. The Sizing Process The kit includes 10 high-quality plastic ring sizers (Sizes 5–14). Here is my tip for getting the best result: Wear the sizer for a full 24 hours. Your fingers swell in the heat and shrink in the cold. I found that a size that felt perfect in the morning was uncomfortably tight by the evening after a workout. Color Accuracy A unique feature of this kit is that it includes colour samples. Seeing the "Aster Black" vs. the "Bionic Gold" in person is much better than looking at a screen. The gold has a sophisticated matte-satin finish that convinced me to switch my original color choice. Pros: True-to-Life Feel: The plastic sizers mimic the width and thickness of the actual Ring AIR, which is crucial for comfort. Convenience: It allows you to test the fit on different fingers (index vs. middle) to see which is most comfortable for sleep tracking. Credit/Value: (Note: Mention if your kit came with a credit toward the ring purchase, as many do). Cons: Plastic Texture: While the size is accurate, the plastic is obviously lighter and "grippier" than the actual titanium ring, so keep that in mind when testing how easily it slides over your knuckle. Final Verdict Do not skip this step. The Ultrahuman Ring AIR is a premium investment, and this kit is the only way to guarantee you’ll be happy with the fit on day one. It’s a small price to pay for total confidence in your purchase
Review: Ultrahuman Ring AIR: Perfect Blend of Precision, Style, and Comfort - I recently had the opportunity to use both the Ultrahuman Sizing Kit and the Ultrahuman Ring AIR in Raw Titanium (Size 9), and my experience has been nothing short of fantastic! The Sizing Kit was a game-changer. It provided a variety of sizes, making it easy to find the perfect fit for the smart ring. The included swatches gave a clear preview of the ring’s look and feel, ensuring I was confident about my choice. This thoughtful approach saved me the hassle of potential returns and made the purchasing process smooth and stress-free. Once I received the Ring AIR, it exceeded my expectations. The Raw Titanium finish is absolutely stunning, and the lightweight design ensures all-day comfort. The sleep tracking is incredibly detailed, offering insights into REM, Deep Sleep, Light Sleep, and Wakefulness, alongside actionable recommendations to enhance sleep quality. The Dynamic Recovery Score, which combines HRV, heart rate, and skin temperature metrics, provides a comprehensive view of my recovery and overall health. The ring’s fitness tracking capabilities are outstanding. The Workout Mode monitors heart rate during workouts, delivering real-time insights to optimize performance. Additionally, the Movement Index keeps me motivated to stay active throughout the day, even beyond workouts. The battery life is another major plus—lasting up to 6 days on a single 2-hour charge, making it highly convenient for daily use. Pairing the ring with the Ultrahuman App was seamless, and the app’s multi-language support adds to its accessibility. Overall, from the perfect fit ensured by the Sizing Kit to the advanced features of the Ring AIR, this has been an incredible addition to my health and fitness journey. Highly recommended for anyone looking for a functional, aesthetically pleasing, and reliable health tracker! 🌟🌟🌟🌟🌟

## Features

- SIZE FIRST - Ultrahuman Ring sizes are different from standard ring sizes. Purchase a sizing kit first to get the perfect ring AIR size. Ring AIR is available in 10 sizes from 5-14.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 | #67,937 in Sporting Goods ( See Top 100 in Sporting Goods ) #378 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 | 4.5 out of 5 stars 1,728 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 | UHRA-MB-15 |
| 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 |

## Product Details

- **Operating system:** Ultrahuman App
- **Memory storage capacity:** 0.5 MB
- **Special features:** Activity Tracker, Custom Activity Tracker, Heart Rate Monitor, Multisport Tracker, Sleep Monitor
- **Battery capacity:** 24
- **Connectivity technology:** Bluetooth

## Images

![ULTRAHUMAN Ring AIR - Smart Ring | No App Subscription Fee | Size First with Sizing Kit | Sleep, Activity & Heart Rate Tracking | Fitness Ring for Men & Women - Image 1](https://m.media-amazon.com/images/I/71jaGrJtr-L.jpg)
![ULTRAHUMAN Ring AIR - Smart Ring | No App Subscription Fee | Size First with Sizing Kit | Sleep, Activity & Heart Rate Tracking | Fitness Ring for Men & Women - Image 2](https://m.media-amazon.com/images/I/81aDmHty4aL.jpg)
![ULTRAHUMAN Ring AIR - Smart Ring | No App Subscription Fee | Size First with Sizing Kit | Sleep, Activity & Heart Rate Tracking | Fitness Ring for Men & Women - Image 3](https://m.media-amazon.com/images/I/71M134h6HbL.jpg)
![ULTRAHUMAN Ring AIR - Smart Ring | No App Subscription Fee | Size First with Sizing Kit | Sleep, Activity & Heart Rate Tracking | Fitness Ring for Men & Women - Image 4](https://m.media-amazon.com/images/I/81yJQ7YsNEL.jpg)
![ULTRAHUMAN Ring AIR - Smart Ring | No App Subscription Fee | Size First with Sizing Kit | Sleep, Activity & Heart Rate Tracking | Fitness Ring for Men & Women - Image 5](https://m.media-amazon.com/images/I/71EZkDK5zlL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Essential Precision for a Life-Changing Wearable
*by M***4 on 27 February 2026*

The "Why" Behind the Kit Smart rings are not like traditional wedding bands. Because they are packed with sensors, the Ultrahuman Ring AIR has a slightly different internal profile that requires a perfect fit for accurate data. I ordered this kit to ensure I didn't waste time with the wrong size, and I’m glad I did—I ended up being a size 9, though I typically wear a size 10 on my index finger. The Sizing Process The kit includes 10 high-quality plastic ring sizers (Sizes 5–14). Here is my tip for getting the best result: Wear the sizer for a full 24 hours. Your fingers swell in the heat and shrink in the cold. I found that a size that felt perfect in the morning was uncomfortably tight by the evening after a workout. Color Accuracy A unique feature of this kit is that it includes colour samples. Seeing the "Aster Black" vs. the "Bionic Gold" in person is much better than looking at a screen. The gold has a sophisticated matte-satin finish that convinced me to switch my original color choice. Pros: True-to-Life Feel: The plastic sizers mimic the width and thickness of the actual Ring AIR, which is crucial for comfort. Convenience: It allows you to test the fit on different fingers (index vs. middle) to see which is most comfortable for sleep tracking. Credit/Value: (Note: Mention if your kit came with a credit toward the ring purchase, as many do). Cons: Plastic Texture: While the size is accurate, the plastic is obviously lighter and "grippier" than the actual titanium ring, so keep that in mind when testing how easily it slides over your knuckle. Final Verdict Do not skip this step. The Ultrahuman Ring AIR is a premium investment, and this kit is the only way to guarantee you’ll be happy with the fit on day one. It’s a small price to pay for total confidence in your purchase

### ⭐⭐⭐⭐⭐ Ultrahuman Ring AIR: Perfect Blend of Precision, Style, and Comfort
*by S***K on 21 November 2024*

I recently had the opportunity to use both the Ultrahuman Sizing Kit and the Ultrahuman Ring AIR in Raw Titanium (Size 9), and my experience has been nothing short of fantastic! The Sizing Kit was a game-changer. It provided a variety of sizes, making it easy to find the perfect fit for the smart ring. The included swatches gave a clear preview of the ring’s look and feel, ensuring I was confident about my choice. This thoughtful approach saved me the hassle of potential returns and made the purchasing process smooth and stress-free. Once I received the Ring AIR, it exceeded my expectations. The Raw Titanium finish is absolutely stunning, and the lightweight design ensures all-day comfort. The sleep tracking is incredibly detailed, offering insights into REM, Deep Sleep, Light Sleep, and Wakefulness, alongside actionable recommendations to enhance sleep quality. The Dynamic Recovery Score, which combines HRV, heart rate, and skin temperature metrics, provides a comprehensive view of my recovery and overall health. The ring’s fitness tracking capabilities are outstanding. The Workout Mode monitors heart rate during workouts, delivering real-time insights to optimize performance. Additionally, the Movement Index keeps me motivated to stay active throughout the day, even beyond workouts. The battery life is another major plus—lasting up to 6 days on a single 2-hour charge, making it highly convenient for daily use. Pairing the ring with the Ultrahuman App was seamless, and the app’s multi-language support adds to its accessibility. Overall, from the perfect fit ensured by the Sizing Kit to the advanced features of the Ring AIR, this has been an incredible addition to my health and fitness journey. Highly recommended for anyone looking for a functional, aesthetically pleasing, and reliable health tracker! 🌟🌟🌟🌟🌟

### ⭐⭐⭐⭐ Great but a power hog
*by L***S on 16 May 2026*

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.

## Frequently Bought Together

- ULTRAHUMAN Ring AIR-Smart Ring Health Tracker, Size First Sizing Kit,Sleep Tracker,Smart Ring for Men/Women,Fitness Tracker (Made in India, Swatch Sizing Kit, Swatch Sizing Kit)
- RingConn Gen 2 Air Sizing Kit - Size First Before You Buy - Choose from 9 Sizes - Sizes 6 to 14 - Only Smart Ring
- Oura Ring 4 Sizing Kit - Size Before You Buy Oura Ring 4 - Unique Sizing - Receive Credit for Purchase

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-07-01*