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One smart ring to rule them all? Finnish startup Oura raises $200M

Finnish startup Oura has closed its Series D funding round at $200mn, bringing the smart ring maker’s valuation to a cosy $5.2bn. Oura’s smart ring uses 20 biometric markers to track sleep, physical activity, and stress resilience. The device displays this data on an app that gives you a personalised “readiness” score. We tested the wearable earlier this year and were genuinely impressed.  Founded in 2013, Oura secured its first funding on Kickstarter, the crowdfunding site, in 2016. Counting this new tranche of capital, the tech startup has raised $550mn since inception. “We’ve made significant progress in advancing our mission to make…This story continues at The Next Web

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Oura Ring 4 long-term review: Out ahead of its rivals
Oura Ring 4 long-term review: Out ahead of its rivals

<p>Smart rings have been a niche inside a niche in the wearables world for more than a decade. But in the last few years, they’ve enjoyed a renaissance as more attention and hype brought bigge [...]

Match Score: 435.42

The best smart plugs in 2025
The best smart plugs in 2025

<p>I recently moved and, before I had a chance to set up my smart plugs again, I found myself turning on my living room lamps manually — I sort of hated it. Reaching, twisting and visiting eac [...]

Match Score: 190.33

The best smart rings for 2025
The best smart rings for 2025

<p style="text-align:left;"><span style="color:rgb(0, 0, 0);font-family:Arial, sans-serif;">It’s getting increasingly difficult to say smart rings are just a niche in [...]

Match Score: 175.95

Oura Ring 4 gets new ceramic options and a charging case
Oura Ring 4 gets new ceramic options and a charging case

<p>Oura’s <a data-i13n="cpos:1;pos:1" href="https://www.engadget.com/wearables/oura-ring-4-long-term-review-out-ahead-of-its-rivals-150047874.html">fourth-generation [...]

Match Score: 146.18

Engadget review recap: Samsung's Galaxy S25 phones, OnePlus 13 and Oura Ring 4
Engadget review recap: Samsung's Galaxy S25 phones, OnePlus 13 and Oura Rin

<p>We may bit a post-CES news lull some days, but the <a data-i13n="cpos:1;pos:1" href="https://www.engadget.com/reviews/">reviews</a> are coming in hot and heavy [...]

Match Score: 92.73

The best Amazon Prime Day deals under $50: Early sales on tech from Apple, Anker, Ring, JBL, Roku and others
The best Amazon Prime Day deals under $50: Early sales on tech from Apple,

<p>Prime Day sales are a great opportunity to nab an expensive bit of shiny new tech you’ve been eying — it’s also an excellent time to get a discount on smaller electronics and accessorie [...]

Match Score: 86.77

The best Amazon Prime Day deals under $50 include sales from Anker, Ring, Lego, Roku and others
The best Amazon Prime Day deals under $50 include sales from Anker, Ring, L

<p>You can snap up a lot of useful tech for less than $50 during Amazon’s <a data-i13n="cpos:1;pos:1" href="https://www.engadget.com/deals/the-best-amazon-prime-day-deals-get [...]

Match Score: 84.14

The Morning After: Apple’s Invite app and its less welcome third-party porn apps
The Morning After: Apple’s Invite app and its less welcome third-party po

<p>The week has been a mixed bag for Apple. First, it launched a new iPhone app for organizing events and being actually social; then, it had to contend with a third-party app store offering a p [...]

Match Score: 81.33

Oura's smart ring gets better at tracking your activities
Oura's smart ring gets better at tracking your activities

<p><a data-i13n="cpos:1;pos:1" href="https://www.engadget.com/wearables/oura-ring-4-long-term-review-out-ahead-of-its-rivals-150047874.html">Oura</a> has rolled o [...]

Match Score: 80.38