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ŌURA, the Finnish smart ring company, has announced its latest product, Oura Ring 5. It is — the company insists — the world’s smallest smart ring. It’s certainly the smallest from Oura so far, though the price tag has just got a bit bigger for some finishes.

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Oura Ring 5 follows Oura Ring 4, from October 2024, which at the time was the company’s lightest version and the more recent ceramic-finish model.

Slimmer Profile And Enhanced Scratch Resistance

The new model is 40% smaller than before, which means it’s lighter, too, though the company hasn’t stated how much lighter. In person, there’s a noticeable difference when you pick the new model up.

Another key difference is ŌURA claims it’s the most scratch-resistant ring yet — which will be quite something if it can beat the Oura Ring 4 ceramic edition.

The new size means ŌURA recommends that customers try a sizing chart before choosing the right ring, even if they’re long-term users.

Week-Long Battery Life And Sizing Adjustments

I know what you’re thinking: if it’s that much smaller, does the battery last any time at all? Where Oura claimed the Ring 4 battery to be five-to-eight days, which I’d say was broadly borne out in practice, the new ring has what’s called “week-long” battery life between charges.

In other words, most users may not notice any difference, according to the company’s claim.

As with Oura Ring 4, there’s also a convenient optional accessory, the Oura Ring 5 Charging Case, which means you don’t have to remember to pack your charging puck when travelling, for instance. Note that the aluminum case comes in different sizes, to match the ring. Also note that such a case is supplied by Samsung for its Galaxy Ring, though there’s no separate puck.

From Symptom Radar To Health Radar

A standout on earlier Oura Ring models has been Symptom Radar. This monitors your temperature and other metrics when you’re sleeping and in the morning can warn you if it thinks you’re about to come down with a cold, flu or Covid, for instance. I was skeptical of this at first, but two days after receiving my first such notification, when I had felt fine, I came down with a heavy cold.

This is now being expanded to Health Radar. “Where Symptom Radar helped members recognize when something felt off, Health Radar goes further: continuously monitoring key biometric signals in the background to surface patterns members should pay attention to, before they become problems,” the company said in a press release.

Will The Design Prove More Popular?

The new Oura Ring 5 is so much smaller that it’s very discreet. You may not even notice that it’s a smart ring at all. Which may be a benefit for many, but it may deter some who like others to know they’re wearing a smart ring.

On a personal note, I can’t tell you how many strangers have opened a conversation with, “Is that an Oura?” — even if I was wearing a Samsung Galaxy Ring, to be fair.

Oura Ring 5 Pricing, Finishes And Shipping Dates

Oura Ring 5 pricing starts at $399 for the black and silver finishes (£399 in the U.K), which means a $50 or £50 price increase compared to Oura Ring 4. The stealth and brushed silver finishes cost $499 (£499), which is $100 or £100 more than Ring 4. Finally, the newly redesigned gold finish and new color, deep rose, also cost $499 (£499) — which means no price increase for gold or deep rose which replaces rose gold.

As a comparison, the Ring 4 Ceramic costs $499 (£499) in all four colors.

Pre-orders, from ouraring.com, are open now and shipping begins on June 4.

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