ULTRAHUMAN Ring AIR Sizing Kit | Choose from Sizes 5-14 | Sizing Guide for Your Smart Wearable Ring

Good product.comfortable to wear all day. The build quality is excellent .Very accurate and easy to use. Saved me from wrong fitting.The kit includes multiple ring sizes, making it easy to find the one that fits comfortably.

This is just an awesome product.. perfect for the workplace and convenient to use...it's gives very luxury look and is very comfortable to use also ...there are different sizes given which suits every coustomer..

I took great pride in skipping the Oura ring and the Whoop strap for something INDIAN !Only to be disappointed - great potential but poorly implemented.Pros -1. Great details and analysis as a potential (not delivered)2. Easy to wear3. Indian tech without any subscription fee except for some advanced features4. Excellent customer care - replacement happened in three days of the complaintCons -1. Poor quality - the Bluetooth modules keep failing - happened on two of my rings2. Spotty and occasional connection to the app / phone3. Gets too hot when charging even with a low wattage charger4. Misses some or even major part of the sleep - happened on two of my devices.Sadly the replacement came through customer care and not through Amazon - where a new replacement or return window would have been open. Now I am stuck with two redundant pieces of tech !On a positive note - I am proud that an Indian company has done this complicated device.But I am disappointed that they did not spend much on quality control !Unnecessary spending - maybe Oura or even the cheap Gabit may be better. Hope Ultrahuman recalls the devices and refunds the money. Seems highly unlikely - though they appear passionate about the product it is still a business after all !Till they rectify folks - let us explore Garmin Venu 3 (working well so far) ; Apple Watch or wait for TCO of Oura to fall.

I’ve been using the Ultrahuman Ring Air for a few weeks now, and I’m genuinely impressed! The build quality is excellent — the titanium body feels premium, lightweight (~4–5g), and extremely comfortable for 24/7 wear, including sleep. The ring’s sensors are precise, and the indentation placement on the underside of the finger makes heart rate, HRV, and SpO₂ tracking very accurate.I love how it automatically detects sleep, naps, and circadian patterns without having to turn on any sleep mode, unlike other devices I’ve used. The Dynamic Recovery Score is super insightful, helping me plan workouts and manage recovery effectively. Even if I don’t wear my Apple Watch at night, the ring logs all sleep and recovery metrics directly into Apple Health, which I can view in my phone’s sleep and vitals widgets.It integrates seamlessly with Apple Health, so steps, calories, and workouts from my Apple Watch show up in the timeline. For gym sessions, I sometimes wear the ring on my non-dominant hand or take it off during heavy lifting to protect it — the combination of the ring for recovery and the Watch for workouts is perfect.The ring is durable, water-resistant (safe for showers, handwashing, and swimming), and the optical sensors are completely safe — the green/red flickering lights are low-power and non-harmful. I also appreciate that it requires no subscription to get full features.Overall, the Ultrahuman Ring Air is an excellent investment for anyone serious about tracking recovery, sleep, HRV, and overall wellness alongside other devices. Highly recommend!

The sizing kit is very well thought out and makes it super easy to find the perfect fit. The rings are clearly numbered (sizes 5 to 14), lightweight, and comfortable enough to test for a couple of days as suggested. The instructions provided in the box are simple and clear – just try, wear for two nights, and finalize your size.I really liked that it also shows the available color options (Raw Titanium, Aster Black, Matte Grey, Space Silver, Bionic Gold) which helps in visualizing before placing the final order. The kit feels neat, organized, and user-friendly.

Lasted around 6 months and failed.Got a replacement under warranty. This one after about 6 months have started cracking on the inner side rendering it useless. The software is good the tracking is good , hardware strength is no good. I used it continuously day and night , only exception during hand wash and bath. Never dropped it even once , as days go by the inner material expands slightly and can be felt when placing in charging dock as it does not slide in easily. These issues have to be addressed by UH. Will I go for one more ? May be not after the bad experience and steep cost of owning one , that can't last a year. Mine is still working but may Crack off anytime . Addressed the issue to Customer care and promptly they send me the second replacement , keeping my fingers crossed and hope this one lasts.

This kit made it very easy to find my correct ring size. Simple, clear, and accurate. Good quality and useful before buying the smart ring.