[This review was collected as part of a promotion.] I bought this a few months ago to monitor my sleep since I wasn’t sleeping well, and I loved the caffeine window feature because I was drinking too much coffee—sometimes to the point of feeling heart palpitations. In fact, there are many more functions that help me in my daily life, and I have no regrets. I love it! Plus, it looks great when worn. Thank you, Ultrahuman

[This review was collected as part of a promotion.] I am so happy to have this ring. The complete insight it provides into sleep details has been incredibly helpful and has allowed me to improve my sleep quality. The app interface is also very user-friendly, and all the data and details it provides are extremely helpful. While I am very satisfied with the core functionality, I have a few suggestions that I believe would make the experience even better. I would love to see a more proper step count feature, as well as the addition of GPS data to accurately record the location of my activities. An NFC function would also be a great addition.

[This review was collected as part of a promotion.] I bought my ring back in March and I have loved it ever since! It keeps track of all of my sleep, including my naps! I love to check my stats as soon as I wake up and throughout my day. It keeps track of when I should and shouldn't have caffeine as well! I like that it keeps up with my ultrahuman age and my heart and brain levels. It makes me feel way better about myself and my lifestyle, knowing that I have an app and ring to keep track of all my information and see what is improving and what is not! This ring is the bomb diggity! I highly recommend it, it's worth the money!!

[This review was collected as part of a promotion.] While the ring itself is good, I’m not happy with the app experience. The information that’s presented is very confusing and I am unable to understand some of the details it shows like phase advance, etc. The accuracy of its detection of my activity is very poor. The app sometimes shows activity detected and asks me if I want to add it and most of the times it doesn’t. The tagging is very bad, I can’t find the tags I want. If I add a custom tag, it won’t get stored so that I can reuse it. The type of workouts are not comprehensive. App leaves a lot to be desired with features, user experience and functionality.

[This review was collected as part of a promotion.] I’ve been using the Ultrahuman Ring Air for a while now and overall, I’m really impressed. The ring is extremely lightweight, making it very comfortable to wear all day and even during workouts. I also appreciate its durability – it feels solid and well-made. The only downside for me is the battery life, which I wish lasted a bit longer. That said, it’s still a great product

[This review was collected as part of a promotion.] I bought this ring a couple of months ago and I am more than satisfied with the information it gives me regarding my overall health. I particularly use it for sleep and heart monitoring, in conjunction with my exercise and medications needed.

[This review was collected as part of a promotion.] I picked this up mainly for sleep tracking (I don't like to sleep with my Apple Watch). I changed the setting to max statistics (which uses the most battery) and just charging it when I get ready for bed or hop in the shower is enough to keep it going. At first I wasn't sure how accurate the data was (the first few days with it the ring said I was asleep while I was watching TV), but after a few days the accuracy improved. Then the first day time I got a cold it asked me the next morning, if I was feeling sick because my temperature was elevated and I had a horrible night of sleep! I did wind up putting black electrical tape over most of the charging LED, that thing is bright enough to light up my entire room, even when the ring isn't connected to it. There's really no need for it to be illuminated when the ring isn't on it.

[This review was collected as part of a promotion.] I love my ring. It took a little to get adjusted to it and now I feel naked if I leave the house without it. The tracking is interesting and a lot more accurate than my apple watch of Fitbit ever was. I love that I am getting more in tune with how my body reacts to certain things like sleep deprivation, eating later meals and proper recovery from stress, stimulants, working out and lack of sleep.

The first ring lost charge within 1/2 a day. The replacement ring has functioned alright. The data acquired seems reasonable, but changing to accommodate the suggestions, less so! Life changes day-by-day and hour-by-hour...It is not always easy to be in the green all the time.

[This review was collected as part of a promotion.] I've had this ring for almost 2 months and it has helped me better my sleep and shown me that I need to move my body more. Love the caffeine tracking feature and cycle tracking so far has been spot on even 2 months in.