---
product_id: 726688137
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: "€ 3.70"
currency: EUR
in_stock: false
reviews_count: 5
url: https://www.desertcart.it/products/726688137-ultrahuman-ring-air-smart-ring-no-app-subscription-fee-size
store_origin: IT
region: Italy
---

# 24+ hrs wear test for perfect fit 5 stylish color options 10 precise 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:** € 3.70
**Availability:** ❌ Out of Stock

## Summary

> 📏 Find your perfect fit, flaunt your style, and never miss a beat with Ultrahuman Ring AIR!

## 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?** € 3.70 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/726688137-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

- • **Optimal Finger Fit:** Designed for index, middle, or ring finger wear to maximize comfort and advanced sleep tracking.
- • **Wear It Like a Pro:** Test your fit for 24+ hours to ensure comfort and data accuracy—because your ring should work as hard as you do.
- • **Size with Confidence:** Avoid guesswork—try before you buy with 10 exact ring sizes tailored for Ultrahuman Ring AIR.
- • **Seamless Upgrade Path:** Once sized perfectly, effortlessly order your Ultrahuman Smart Ring and join the future of wellness.
- • **Style Meets Precision:** Choose from 5 sleek colors to match your unique vibe and elevate your everyday tech look.

## Overview

The ULTRAHUMAN Ring AIR Sizing Kit offers 10 precise sizes (5-14) and 5 color options to help you find your perfect smart ring fit. Designed for 24+ hours of wear testing, it ensures optimal comfort and data accuracy when worn on your index, middle, or ring finger. Lightweight and easy to use, this kit is your essential first step before purchasing the Ultrahuman Smart Ring, blending style with cutting-edge wellness tracking.

## Description

PICK YOUR SIZE & COLOUR: Once you know your size, you can now choose the colour of your ring from the swatch card provided in the box. The swatch card showcases all 5 colours: Aster Black, Space Silver, Bionic Gold, Matte Grey, and Raw Titanium. Find the perfect match for your style.

Review: 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.
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

## Features

- SIZE FIRST - Ultrahuman Ring sizes are different from standard ring sizes. Purchase Ultrahuman Sizing Kit first to get the perfect Ring AIR size. Ring AIR is available in 10 sizes from 5-14.
- THE RING OF YOUR DREAMS - Ultrahuman Ring AIR is the perfect sleep tracker ring. Along with insights on all your sleep stages — REM, Deep Sleep, Light Sleep and Wakefulness, get actionable steps to improve sleep so you're ready for the day.
- DESIGNED TO KEEP YOU MOVING - The 'Movement Index' is designed to increase your non-exercise energy usage through the day. With this all-in-one activity and fitness tracker, you can track steps, workouts and calories for insights into your all-day activity. All features work together seamlessly, to make sure you get the most out of the smart ring. Workout Tracking is now easy, with a dedicated Workout Mode that tracks Heart Rate during workouts — you can get insights into your cardiovascular response, track intensity levels, and make informed decisions to improve your fitness outcomes.
- ENHANCED RECOVERY - Ring AIR is geared to help you recover better, with focused recovery tracking. The 'Dynamic Recovery Score' is derived from a blend of key metrics including heart rate monitoring, Heart Rate Variability (HRV) and skin temperature that track not only sleep but also every aspect of your lifestyle, giving you actionable insights. Designed to evolve with you, Dynamic Recovery will update in real-time when you take naps, sauna sessions or any contributors to enhance your recovery.
- FUNCTIONALLY AESTHETIC - The Ultrahuman Ring AIR is forged with space grade titanium. Meticulously designed for enhanced comfort, this sleek device combines minimal form factor with precise performance, enabling users to effortlessly monitor key health indicators such as Sleep, Movement, Heart Rate (HR), Heart Rate Variability (HRV), and skin temperature.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D8HYRS46 |
| Band Color | Black |
| Band Material Type | Titanium |
| Battery Average Life | 6 Days |
| Box Contents | Sizing Kit Guide |
| Brand Name | ULTRAHUMAN |
| Case Material Type | Titanium |
| Colour | Matte Black |
| Compatible Devices | Smartphone, Tablet |
| Compatible Phone Models | Smartphone, Tablet |
| Connectivity Technology | Not Required |
| Customer Reviews | 4.5 out of 5 stars 1,674 Reviews |
| Display Type | Analog |
| External Testing Certification | Não aplicável |
| GPS | no |
| GPS Geotagging Functionality | no |
| Global Trade Identification Number | 08906184870700 |
| Human Interface Input | Unknown |
| Item Dimensions | 17 x 15 x 7 Centimeters |
| Item Type Name | Ultrahuman Ring AIR Sizing Kit |
| Item Weight Unit of Measure | 2.4 Grams |
| Language | French |
| Manufacturer | Ultrahuman Healthcare PVT LTD, No. 4088/799, Third Floor, V K Paradise Sector-2HSR Layout, Bangalore Karnataka 560102 India, Contact - 18001028693, cyborg@ultrahuman.com, Ultrahuman Healthcare Pvt Ltd |
| Manufacturer Contact Information | Ultrahuman Healthcare PVT LTD, No. 4088/799, Third Floor, V K Paradise Sector-2HSR Layout, Bangalore Karnataka 560102 India, Contact - 18001028693, cyborg@ultrahuman.com |
| Memory Storage Capacity | 0.5 MB |
| Metrics Measured | Blood Oxygen (SpO2), Calories Burned, Heart Rate, Sleep Duration, Step Count |
| Model Name | Ultrahuman Ring AIR Sizing Kit |
| Model Number | UHRA-MB-15 |
| Operating System | android |
| Packer Contact Information | Ultrahuman Healthcare PVT LTD, No. 4088/799, Third Floor, V K Paradise Sector-2HSR Layout, Bangalore Karnataka 560102 India, Contact - 18001028693, cyborg@ultrahuman.com |
| Product Features | anti-scratches |
| Shape | Round |
| Special Feature | anti-scratches |
| Sport Type | Cycling, Fitness, Multi-Sports, Swimming, Yoga |
| Style Name | Sizing Kit with Swatch |
| Supported Application | Sleep Monitor |
| Unit Count | 1 Count |
| Warranty Description | 1 Year |
| Waterproof Rating | IPX8 |
| Wearable Computer Type | Smart Ring |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |

## Product Details

- **Connectivity Technology:** Not Required
- **Memory Storage Capacity:** 0.5 MB
- **Operating System:** android
- **Special Feature:** anti-scratches
- **Wireless Communication Standard:** 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/71tH17YH41L.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/71ckOmdDTbL.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/81ETLwK90KL.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/81mGnFtx5cL.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/81LjLhxz+OL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great idea to get your correct size because of the big investment you;re making
*by N***8 on 22 March 2025*

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.

### ⭐⭐⭐⭐⭐ 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

### ⭐⭐⭐⭐⭐ Ein Muss, wenn man einen ULTRAHUMAN Ring Air-Smart ring kauft
*by B***L on 1 December 2024*

Ein Muss, wenn man einen ULTRAHUMAN Ring Air-Smart ring kauft

## 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 Italy*
*Store origin: IT*
*Last updated: 2026-05-14*