The Oura Ring 5 Review: Is a $400 Smart Ring Worth Wearing Every Day?

When I first slipped the Oura Ring 5 onto my finger, the first thing I noticed was how thin it felt—about 40 % slimmer than the previous generation. At just over 2 mm thick and weighing between 2 and 2.7 grams, the thing is practically a piece of jewelry you barely notice.

That little size advantage comes with a few trade‑offs. The ring doesn’t have GPS, so it can’t log a run the way a smartwatch does. Instead, it leans on a suite of sensors—heart‑rate, temperature, respiratory rate and even blood‑oxygen—to give you a pretty detailed picture of how you’re sleeping, resting and moving.

Battery life was a pleasant surprise. In my day‑to‑day use, a full charge lasted about a week, and under ideal conditions Oura claims up to nine days. That’s a noticeable bump over the Ring 4’s five‑to‑eight‑day window, and it means I could forget to charge it until the weekend without worrying.

Water‑resistance is another solid point: the ring is rated for 100 metres, so a quick dip in the pool or a shower won’t kill it. The only thing it can’t survive is a hammer.

Now, the part that raised an eyebrow: Oura’s subscription model. The ring will collect data all day, but without a membership you only see the current day’s numbers in the app. To unlock historic trends, personalized insights and the “Symptom Radar” alerts (which flag subtle spikes in resting heart rate, temperature or respiration), you need to pay $5.99 a month or $69.99 a year.

My co‑editor Caitlin Cusack and I wore the Ring 5 for more than a month, sleeping under different conditions and taking a few bike rides for comparison. Sleep tracking felt spot‑on—its deep‑sleep graphs lined up with the Apple Watch Series 11 and even the newer Fitbit Air. The “Symptoms Radar” actually nudged me to rest when a low‑grade cold started creeping in, which was a nice, almost clinical little heads‑up.

Exercise detection, however, was hit‑or‑miss. The ring recognized most runs and walks, but it struggled with outdoor cycling, often labeling a ride as merely “light activity.” If you’re a serious athlete who relies on precise workout logs, you might find that limitation frustrating.

All told, the Oura Ring 5 delivers on what it promises: a sleek, comfortable piece of hardware that gives reliable sleep and recovery data. The subscription fee feels like a necessary evil to get the full story, and the lack of GPS means it won’t replace a dedicated fitness tracker for every sport.

So, is the $399 price tag justified? If you value a discreet wearable, love digging into night‑time metrics, and don’t mind paying a bit extra for history and alerts, the Ring 5 is a solid pick. If you need on‑the‑fly GPS or prefer a one‑time purchase, you might look elsewhere.