Oura Ring 4 - Black - Size 10 - Sleep, Activity, Women’s Health, AI Advisor, Up to 8 Days of Battery Life, Size Before You Buy, Android & iOS Compatible

I got this Oura ring for my wife for Christmas this past year and she loves it as well as the rose gold color. It's a very good way to take control of your sleep and improve sleep quality. The ring tracks your sleep down to the minute, is crazy accurate, and works with an app that, once installed, works offline and connects to the ring through Bluetooth. Every morning you can get a full breakdown on the app of your sleep pattern for the night including sleep stages (light, REM, deep), heart rate, heart rate variability, body temperature, respiratory rate, total sleep vs time in bed, your sleep efficiency, your "body clock" and even "sleep debt" (which tracks how much sleep you're getting vs how much you need for your body type). It also tracks the menstrual cycle for women, which my wife uses and likes a lot. She's been able to figure out a pattern based on her heart rate that happens the day before her period actually starts, which works every time - super cool! Of course it does other things like tracks your steps, exercise, you can log your meals etc. Too many things for me to include in this review. The ring fits my wife's finger perfectly. Before you buy you have to purchase the ring sizing kit, which is cheap, and you can use it for friends if you refer people (which you can get awarded for monetarily). The sizing is pretty easy, wear one of the sizers for a day and make sure it's comfortable and then order your ring. I've also seen the ring sizing kits on display in places like Costco or Best Buy, so that's another option without having to buy the kit. The battery lasts about a week, which is pretty good. And it charges in less than an hour, sometimes half an hour if she's charging it more regularly than a week (which your supposed to do). My own Oura Ring 4 is over a year old and I have to charge it every 2-3 days. I admit, I did not follow their recommendations for maintaining the best battery life, so can't complain there. Overall, Oura Ring is fantastic and I'd highly recommend it to anyone. My wife and I have both been able to improve our overall sleep quality since using them. They are a very good tool for that if you want to prioritize sleep in relation to health (which anyone should).

I absolutely love this ring and all it offers. I’ve recommended it to everyone who has asked about it in the 11 months I’ve been wearing it (24/7). I know at least one person who has purchased one based off of my recommendation. Lately, within just the last few weeks, I’ve noticed the battery life has decreased sufficiently. Going from 5-6 days between charges to 2-3 days. Then the last week, I’ve begun having connectivity issues. While frustrating, I love this ring. So much so that I was seriously considering buying another one. But that $400.00 price tag is steep. Today I decided to submit a question for help through the app. Within 5 minutes tops, the virtual assistant determined I was indeed having issues, confirmed the ring I have is in stock and informed me that a replacement would be shipped with arrival time at 1-2 weeks. I am just under the year (purchased 4/8/2025 and today is 3/4/2026) but that was unexpected and honestly, amazing!!! I am so impressed. Enough so, I came to Amazon to write a review (which I never do). I will continue to recommend this product to anyone and everyone who asks!!!

I work out 5 days a week, and my Oura Ring Gen 4 has been an absolute game-changer for my routine and recovery. The sleep tracking alone has helped me understand how my body actually recovers, not just how hard I train. Seeing my sleep quality, readiness, and recovery metrics every morning has completely changed how I plan my workouts. What really stands out is how seamlessly it tracks my overall wellbeing—from sleep stages and recovery to daily readiness and trends over time. It’s helped me dial in better habits, know when to push hard, and when to prioritize rest. The insights feel meaningful and actionable, not just data for data’s sake. On top of that, it’s comfortable, unobtrusive, and easy to wear 24/7. The battery life is great, it runs easily for about 6-7 days with one full charge, plus it charges pretty quickly. If you’re serious about training, recovery, and long-term health, this ring is 100% worth it. I honestly can’t imagine my routine without it now. 💪

Delivery took longer than expected, but i am happy with the ring. It does exactly what they advertise. Its a nice to have.

前モデルのバッテリが1日しか持たなくなったため、第4世代モデルに移行しました。機能は前モデルとほぼ同じなので、アプリサイドの更なるアップグレードを期待したいと思います。とはいえ、安定のモデルであることは間違いないです。

後で判明したがアマゾンとその他で1000円近く値段が違う。類似の商品にも出て来なかった。 ２４時間装着とあったので着けて寝たら、かぶれでしまった。本商品とは素材が違うが、高いので怖くて買えない

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