Oura Ring 5 Review: Great First Ring, Small Step From Ring 4

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Overview

The Oura Ring 5 tracks sleep, heart rate, heart rate variability (HRV), temperature trends and daily movement around the clock, with no screen or vibration motor on the ring: everything shows up in the Oura app on iPhone or Android. What’s new is how little ring there is. It weighs from 2 grams depending on size (the Ring 4 ran 3.3 to 5.2 grams), and at 6.09 mm wide and 2.28 mm thick it looks more like a plain band than a gadget; Oura puts the reduction at 40% of the Ring 4’s volume.

Almost everything new is hardware. The sensor array went from 18 light paths to 12 with LEDs Oura says are four times stronger, the battery rating rose to 6 to 9 days, and the size range narrowed to 6 through 13. The software is shared with the Ring 4, which gets the same features, so the case for the Ring 5 rests on comfort. For a first smart ring, or an upgrade from a Gen3 or older, that case is strong; for a happy Ring 4 owner, it is thin.

Key Specifications

Oura Ring 5 Sleep and Recovery Tracking

Sleep is still the reason to buy an Oura. Each morning the app turns the night’s heart rate, HRV, temperature, breathing and sleep timing into Sleep and Readiness scores, alongside longer views such as sleep debt and a body clock that shows how regular your schedule is. DC Rainmaker points out that scores like these need two to three weeks of wear to be useful and two to three months for a solid baseline, so judge the ring after a month, not a night.

How accurate it is depends on whose test you read. Android Authority rated its sleep stages among the most accurate it has tested against reference devices, and on a normal night in Wareable’s comparison with Eight Sleep’s tracking the two were a minute apart (7 hours 58 minutes against 7 hours 59). DC Rainmaker is cooler: in its side-by-side tests the major brands now get sleep times and HRV about equally right, so Oura’s old lead has faded, and it suggests paying attention to total sleep and consistency rather than the stage breakdown.

Oura credits the brighter LEDs with a 12% gain in overnight HRV accuracy over the Ring 4. Testers who came from a Ring 4 mostly found that gain hard to notice, though Cybernews judged the new ring more accurate, especially for heart rate, and Android Authority’s overnight heart rate and HRV readings lined up closely with its reference devices night after night.

Health Radar, Oura’s newest software, compares each night’s blood-pressure and breathing signals with your own normal and flags a lasting change. Oura says these features are meant for general wellness, not diagnosis, and as BGR puts it, “Neither has much independent validation yet.” Both also run on the Ring 4 and Gen3, so they are no reason on their own to choose the Ring 5.

Size, Fit and Durability

The smaller body is the upgrade reviewers noticed first. Against the Ring 4’s 7.9 mm width and 2.88 mm thickness, the Ring 5 passes for ordinary jewelry, and testers who had worn both found the new ring easier to forget about, including in bed. Small bumps on the inside of the band mark which way the sensors should face, so you can line it up by feel.

Fit is the trade. The Ring 5 comes in sizes 6 to 13, where the Ring 4 runs from 4 to 15; Oura told TechCrunch it dropped the smallest and largest sizes because the new form factor is harder to manufacture, and that it is watching demand for them. Oura’s sizing also differs from the Ring 4’s and from standard ring sizes, so order the free sizing kit and wear the sample for a full day, overnight included, before choosing. Outside 6 to 13, the Ring 4, RingConn Gen 3 (6 to 15) or Samsung’s Galaxy Ring (5 to 15) still fit.

Oura says a new PVD coating makes this generation more scratch-resistant, and the reviews bear that out. In the first weeks of daily wear (one tester’s included kettlebell workouts), none showed visible scratches; the two longest tests found only small marks, a couple of tiny dings after eight weeks for Wareable, visible only against the light, and a few scratches after about three months for Woman & Home, minor next to what it saw on earlier models. It is water-resistant to 100 m (328 ft): fine for showers, swimming and snorkeling, not for scuba diving. Two practical limits: the ring holds up to three days of data between syncs, down from a week on the Ring 4, and Oura’s one-year limited warranty covers manufacturing defects but lists batteries among the consumable parts it excludes.

Battery Life and Charging

Oura rates the Ring 5 at 6 to 9 days, up from 5 to 8 on the bigger Ring 4, and says ring size and settings decide where you land. Testers’ results followed that spread. DC Rainmaker’s size 10 lasted seven days and then six on each of the next two charges, with one to two hours of workouts a day on average; T3’s size 12 still had 15% left after almost nine days; Trusted Reviews’ ring went just shy of eight days with about 15% to spare. Expect to charge it about once a week.

Charging is quick. Oura quotes about 80 minutes for a full charge, and T3 measured 15% to around 50% in 25 minutes, enough for a top-up during a shower. The charging dock comes in the box, but Oura’s portable charging case is an extra purchase, while RingConn’s Gen 3 and Ultrahuman’s Ring Pro come with one.

Workout Tracking

Workouts are where the Ring 5 falls behind, even with the live workout screen that arrived in the app with this generation. DC Rainmaker found that the ring’s heart rate never reached Strava with the workout, and that pairing a chest strap for live heart rate stopped the workout reaching third-party apps at all. Trusted Reviews notes there are no stride or cadence figures for runners, and that pace and distance show only on outdoor sessions; its treadmill runs got a heart rate reading alone.

The heart rate itself is often good. In Wareable’s two-hour indoor ride the ring averaged 139 bpm against 140 from a Garmin chest strap, and DC Rainmaker’s road runs and trainer rides mostly tracked close to a strap, apart from one interval where the ring read up to 24 bpm off. Rough terrain and gripping are the weak spots: DC Rainmaker saw its accuracy collapse for the rest of a steep trail descent, and Android Authority’s readings dipped while gripping a rowing handle.

Most testers found automatic workout detection reliable: it caught every workout in Stuff’s month with the ring, and Trusted Reviews’ ring picked up runs, walks and even gardening and improved once corrected, though it also logged showers as exercise. DC Rainmaker is the exception, finding it rarely identified workouts correctly apart from some bike rides. Reviewers agree on the bigger picture: this is a wellness tracker that logs everyday movement well, and anyone doing structured training should wear a sports watch for it.

The App and the Membership

With no screen on the ring, everything happens in the Oura app. Most of it needs Oura Membership, $5.99 a month or $69.99 a year in the US as of October 2026 (HSA/FSA eligible, with the first month free for new members); without it the ring and app still work, but Oura says the insights and data you get are much more limited. On the annual plan the first year comes to $468.99 with the ring at Amazon’s $399 (October 2026).

Most testers found the app clear and easy to learn, and BGR singles out how well it explains each metric and what to do about it. DC Rainmaker dissents, finding that the redesign spreads the data too thin and repeats the same readiness, sleep and activity trend charts across sections. Oura Advisor, the built-in AI chat, answers questions about your own data, and the app connects to third-party services such as Strava.

How Does It Stack Up Against the Competition?

Ring shoppers mostly weigh the Ring 5 against its predecessor, which Oura still sells, and two widely reviewed rings from other brands; prices are for size 8 listings, and each brand uses its own sizing.

Oura Ring 5: Worth It for Comfortable, Week-Long Sleep Tracking

Buy it as a first smart ring, or to replace a Gen3 or older Oura, if what you want is sleep and recovery data from something you never take off. It is smaller, lighter and more comfortable than the Ring 4, it works the same on iPhone and Android, and a week between charges leaves few gaps in the record. It also fits people who won’t sleep in a watch but want the overnight trends a good watch would give them.

Look elsewhere in three cases. A Ring 4 owner who is happy with it gains comfort and little else, since the Ring 4 gets the same software, so keeping it is the sensible call. Galaxy phone owners get tighter Samsung Health integration and gesture controls from the Galaxy Ring, which BGR calls the more sensible pick for them. And if training data is the priority, a sports watch will serve you better than any ring. If you already sleep in a watch, DC Rainmaker’s side-by-side tests found the major brands now track sleep about as well, so the Ring 5 makes most sense if you’d rather not wear the watch to bed.

GuideSmart Ring Buying Guide: Choose by Sensors and SubscriptionRead the Guide →

Oura Ring 5

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Sarah MitchellSenior Editor 𝕏 Ⓟ

Sarah has spent more than a few decades — she's not saying how many — in home design, with a sharp eye for products that deliver real quality without the inflated price tag. Her passion is finding the hidden gem that makes everyday life genuinely better.

How this was made: Built from the 22 sources listed above, including 9 independent reviewers such as DC Rainmaker, Android Authority and Wareable. Written with AI, then fact-checked against those sources by a separate AI. We haven’t tested this product ourselves. How we review →