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Ultrahuman Ring AIR Aster Black - Size 9

These rings differ from standard sizes, making a sizing kit essential for the right fit.

Try Sizing Kit First

Daily sleep scores and stage tracking help you learn what affects your rest.

Track Your Sleep Quality

Monitors skin temperature, stress, and HRV to show when your body is fully restored.

Know Your Recovery Score

Built-in motion sensors track all daily walks and intense workouts continuously.

Records All Your Movement

<ul><li><strong>Activity Monitoring</strong>: Continuously tracks physical activity throughout the day using advanced motion sensors, monitoring various types of movement from light activities to intense exercises.</li><li><strong>Sleep Quality Tracking</strong>: Provides an everyday sleep score, tracks sleep stages, and identifies factors affecting sleep quality.</li><li><strong>Recovery Analysis</strong>: Analyzes key physiological markers to provide a real-time Recovery Score, considering sleep, stress rhythm, skin temperature, and HRV.</li><li><strong>Health Monitoring</strong>: Offers passive and preventive health monitoring capabilities.</li><li><strong>Sizing Guidance</strong>: Available in 10 sizes from 5-14, with a recommendation to purchase a Sizing Kit first.</li></ul>

<br><ul><li>Size Before you Buy - 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.</li><li>Leverage the Ring AIR’s cutting-edge, passive and preventive health monitoring capabilities to set yourself on a path toward extended vitality and your quest for a longer, healthier life.</li><li>Unlock your body’s hidden potential and crush your goals, day after day. Experience Ring AIR’s revolutionary approach to performance and productivity, keeping you at your best mentally and physically.</li><li>The Ring continuously monitors your physical activity throughout the day using advanced motion sensors. It tracks various types of movement, from light activities like walking to more intense exercises, providing a comprehensive view of your daily activity levels.</li></ul>

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Discover the key to sleeping better. Get an everyday sleep score that shows how well you've rested. Track your sleep stages, learn what affects your sleep quality, and unlock personalized tools for better nights. Wake up refreshed and ready for anything. Dynamic Recovery analyzes key physiological markers for a real-time Recovery Score. Understand how sleep, stress rhythm, skin temperature, and HRV affect your body's restoration. Improve recovery with power naps and breathwork techniques.

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Walmart Protection Plan

<ul><li>PROTECTION PLAN WPP ELEC ECOM</li><li>PROTECTION PLAN WPP AUTO ECOM</li><li>PROTECTION PLAN WPP AUTO ECOM</li><li>PROTECTION PLAN WPP AUTO ECOM</li></ul>

<a href="https://asur.me/legalwarranty"target="_blank" rel="noopener noreferrer">Notice for Quebec Customers</a><br><br><b>Protect it today, enjoy it for years.</b><br>Get low-cost, great value protection that goes beyond the manufacturer’s warranty, keeping your product covered when you need it most.<br><br><b>Protection covers:</b><br>• Mechanical and electrical failures.<br>• Defects in workmanship and materials from normal use.<br>• Fast, easy online claims backed by our 3-Business-Day Service Guarantee.<br>• 100% coverage for parts, labour and shipping - no deductibles or additional cost (pay $0 for approved claims).<br><br><b>How the Plan works:</b><br>1. Add a Plan to your order.<br>2. Plan details will be emailed to you after completing your purchase.<br>3. Start a claim online anytime or by phone.<br>We’ve got you covered up to the amount you paid, whether it’s a replacement, a refund or repairs.<br><br>You can cancel within 90 days of purchase for a hassle-free refund, according to your plan terms.<br>Limitations and exclusions apply. For more details, <a  target="_blank" href="https://i5.walmartimages.ca/dfw/8822aef6-f68b/k2-_70b1a5be-58e2-4050-a066-c561ee770b7e.v1.pdf?icid… rel="noopener noreferrer">view the terms and conditions. </a>

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               <h3>4 equal payments</h3>
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            <p class="gray">Please note that a higher initial payment may be required for some purchases. Pay later in 4 <a href="https://cdn.klarna.com/1.0/shared/content/legal/terms/0/en_ca/paylaterin4" target="_blank">terms</a> available here. For Quebec residents, these Pay Later 4 <a href="https://cdn.klarna.com/1.0/shared/content/legal/terms/0/en_ca/paylaterin4_quebec" target="_blank">terms</a> are applicable. </p>
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        <h3>Shop today, take time to pay</h3>
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          Split your purchase into 6 equal installments*  /
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          <li>Select Installment Plan at checkout</li>
          <li>
            Pay with your Walmart Rewards Mastercard. If you don't have one,
            click "Apply Now".
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          Your qualifying purchase will be split into 6 equal monthly
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          Apply now and upon approval use your new account to enjoy the
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          Dollars™ cannot currently be used on Installment Plan transactions.
         
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          ∆ All new credit card applications are subject to approval by
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Black

Gold

Grey

Silver

The outer shell is made from fighter jet grade Titanium reinforced with Tungsten Carbide Carbon coating, making it resistant to everyday wear and tear The inners of the ring is coated with medical-grade hypoallergenic epoxy resin, making it comfortable to wear at all times

Titantium

5 in

6 in

7 in

8 in

9 in

10 in

11 in

12 in

13 in

14 in

Sleep Tracking

Tracking Accuracy

Battery Life

Health Insights

App Functionality

Wearing Comfort

Charging

Appearance

Workout Tracking

Caffeine

Build Quality

Design

Ease Of Use

Feature Set

Health Tracking

Weight

Health Metrics

Overall Experience

Instruction Clarity

Bluetooth Connectivity

Overall Performance

Provides actionable health and sleep metrics.

Provides insights into sleep patterns, including duration and quality.

Can last several days, but may vary from 3-6 days depending on usage.

[This review was collected as part of a promotion.] I have been wearing my Ultrahuman Ring for more than 6 months with great results. Easy to read & understand. Allowing you to work on changes to your health. Highly recommend this great wearable product.

Great wearable product, highly recommend!

Ultrahuman

[This review was collected as part of a promotion.] I love the fit of this ring! They send you out a measuring ring size kit with multiple basic ones to test for a day to get the perfect fit! It tracks stress aswell as sleep and heart rates! I love the scoring system it does too! I never understood the value for money after testing this and it's top of the marks

The best ring ever

influenster.com

[This review was collected as part of a promotion.] LOVE IT. This ring makes it so so easy for me to track metrics about myself and honestly, I forget I'm wearing it most of the time. The battery life is also so long, I usually charge it every once in a while when I shower, and I've never had it die before. 10/10 would recommend!

Get one!!

[This review was collected as part of a promotion.] Such a good product, my productivity went through the roof, it was durable and comfortable to wear during the summer months, found it was very accurate and helped me analyse when I should train and when I needed to recover

Product of the century

[This review was collected as part of a promotion.] The Stelcore X Ultrahuman Ring Air fits snugly thanks to its sizing kit, feels feather-light and ultra-comfy for 24/7 wear, boasts durable titanium build with scratch resistance, delivers impressively accurate health insights, and lasts 4–6 days per charge with fast USB-C charging. A sleek, reliable wellness companion.

A visionary blend of strategy and execution—Roomi

[This review was collected as part of a promotion.] Great device for those who are interested to track daily habits and especially when going to gym and tracking training goals. Can easily connect to my phone, easy to use when it comes to tracking heart rate, blood flow. Besides helps location capture and additional biomaker data. It's perfect tool to track your health and understand it's needs. Lightweight and great design

Good tracking

[This review was collected as part of a promotion.] Been wearing this ring daily for the last month and it has become my new favourite health tracker. I mainly use it for sleep tracking as wearing my Apple Watch to bed was cumbersome. It is very comfortable throughout the day and due to the friendly ring sizing guide you get before the ring, is a perfect fit, battery life is great with several modes to choose from and is very durable for everyday use. If, like me, you are a gym goer or are very active with your hands, it would be best to buy a silicone protector for this as it will scratch under heavy use. The only negative with this ring is a potential flaw its long term functionality, when I first received the ring, it lasted less than 24 hours before it would no longer connect or charge. Upon reading online this is a very common issue with these. Support is not the quickest, with long time in between replies. After being told to try several troubleshooting methods including a 4 day battery drain, which did not work, I was sent a replacement. I was without a ring for over 2 weeks which was a little disappointing but the main thing is that the replacement is going on strong.

Sleek & Fashionable Daily Health Tracker

[This review was collected as part of a promotion.] I was sent out a sizing kit prior to choosing the actual colour and size of the ring I wanted. It was nice being able to see colours and the raw titanium I chose matched the test colour perfectly. Sizing wise, I wish there were half sizes. I was in between two sizes so had to go with what my gut was telling me. Luckily, I chose the correct size.

The ring itself is superb quality. It is well-built and looks incredible on my hand. It is comfortable and is lightweight.

I love all the tracking features, but there are times I feel overwhelmed with all the information and don't know where to look. Additionally, it says I'm asleep at times when I'm still awake. Plus the heart rate it measures me as having is sometimes completely different to a smart watch I wear.

However, all-in-all, I'm very happy with this ring and certainly plan on wearing it for a very long time.

Fantastic quality smart ring

[This review was collected as part of a promotion.] Very well packaged from the sample rings set to ensure you pick the right size to the final delivered product.

Ring is comfortable and readings are accurate compared to other smart product used.

I think the battery life is adequate for such a small product 3/4 days on turbo mode. This however is the one thing that lets the app down a push notification to say charge soon would be simple to implement and massively useful to users for what is a nice to have product.

Overall I like the product and will continue to use it as a daily use device

Great product

[This review was collected as part of a promotion.] I had never heard of Ultrahuman rings before but wow it's not part of my daily life. 
From the start the journey you go though is so personal. Getting your ring sizing box which is reusable. Then being able to pick the colour you want from the list. It all feels so personal and makes your feel part of the journey. 

Then the unboxing and all the all the information provided really is impressive. All the small details are looked after. 

I haven't taken the ring of only to charge it! 
The in-depth analysis that it provides you is something I have never seen or used before. 
The summary of sleep score, caffeine score even to suggestions to help your improve your score suggested bed times, sleep score it's does everything. Even alerted me to a very low heart rate during my sleep. Which sounds scary but something a garmin or Fitbit never ever picked up. 

The ring is really comfortable to wear and is hardly noticeable. Fits with pretty much all my attire. 
The only downside and bad thing that stops me giving the ring a 5* review is I play a lot of racket sport and it's hard to play with the ring on my racket hand it got slightly uncomfortable and I had to take it off. 
My of my sport is tennis or padel so that's a big deal to me personally. 
Most other sports even swimming would not be and issue as the ring is waterproof. 

I really do love this Ultrahuman ring and the app that comes with it. Having the app be free is also an added bonus. 
I think it going to be part of my life for a very long time now. 

Also worth mentioning it still looks as perfect as the day it arrived.  Cannot recommend this Ultrahuman ring enough.

The fitness gadget I didn't know I needed. Now it'

[This review was collected as part of a promotion.] Stopped sending data to my app after about 2 months of use and the battery dies after a few hours - doesn't last a full night.  I tried resetting it, followed all of the prompts, but nothing will fix it. Basically completely useless and a total waste of money.

Stopped working after 2 months

Ultrahuman Ring AIR Aster Black - Size 9 front-facing close-up of a matte black smart ring with a slim circular silhouette and smooth inner band on a light-gray background. Ring AIR tracks sleep stages, HRV, skin temperature and daily activity and is often used for recovery tracking and power-nap monitoring.