The Smart Ring Just Got Smarter
Oura has done it again. The Finnish health-tech company behind one of the most popular smart rings on the market has just launched the Oura Ring 5 — and if you thought the Ring 4 was already impressively discreet, the new model takes things to another level entirely.
Described by Oura as the world's smallest smart ring, the Ring 5 is 40% smaller than its predecessor. That's not a minor tweak — that's a genuine engineering leap that makes the device feel less like a wearable and more like, well, just a ring.
What's New in the Ring 5
The headline spec is the size reduction, but the Ring 5 brings more than just a slimmer profile. Oura has refined the internal sensor array, improving the accuracy of its heart rate, SpO2 (blood oxygen), skin temperature, and sleep tracking capabilities.
The device still communicates with a companion app that synthesizes all that biometric data into three daily scores: Readiness, Sleep, and Activity. These scores have become a daily ritual for hundreds of thousands of users who've come to rely on the ring as a passive, always-on health monitor that doesn't demand constant attention the way a smartwatch does.
The Ring 5 starts at $399 USD — in line with previous generations — with an ongoing subscription required for full app access.
Why the Size Reduction Matters
For anyone who's worn a smart ring, bulk is a real consideration. Unlike a smartwatch, a ring sits on your finger all day and night, including during sleep (which is actually when it does some of its best work). A thicker, heavier ring can feel intrusive, particularly during workouts or when sleeping on your side.
Oura's move to shrink the form factor without sacrificing battery life or sensor performance is the kind of iterative improvement that keeps it ahead of competitors like Samsung's Galaxy Ring and various challengers from Chinese brands that have flooded the market in recent years.
The Smart Ring Market Is Heating Up
The Ring 5 arrives at a moment when the smart ring category is more competitive than ever. Samsung entered the space last year with the Galaxy Ring, which integrates tightly with the broader Samsung Health ecosystem. Apple is rumoured to be developing its own ring-form-factor device, though no official announcement has been made.
Oura's advantage remains its years of data, its sleep-science credibility — the company has partnered with research institutions and has been cited in peer-reviewed studies — and the simplicity of a ring that doesn't need to be charged every night.
Who Should Buy It
The Oura Ring 5 is ideal for people who want serious health tracking without the bulk, screen, or notification overload of a smartwatch. Athletes, biohackers, sleep-obsessed wellness enthusiasts, and anyone who finds wearing a smartwatch during sleep uncomfortable will find the Ring 5 compelling.
At $399, it's not cheap — and the subscription model adds to the long-term cost. But for those already in the Oura ecosystem, or those looking to make the jump from a smartwatch to something more passive and precise, the Ring 5 looks like the most refined version of this concept yet.
Source: TechCrunch
