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Oura smart ring is being sued over claims its sleep-tracking accuracy is wildly exaggerated

The lawsuit, filed Thursday in California, alleges Oura's sleep-stage estimates are no better than a coin flip despite claims of 95% accuracy

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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: 326.30

How to track your sleep and view your sleep data in Apple Health
How to track your sleep and view your sleep data in Apple Health

<p>Apple Health brings sleep tracking, scheduling and long-term analysis into one place, with your <a target="_blank" class="link" href="https://www.engadget.com/mobi [...]

Match Score: 228.19

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: 120.00

Samsung Galaxy Watch 7 review: Incrementally better than its predecessor...again
Samsung Galaxy Watch 7 review: Incrementally better than its predecessor...

<p>We called 2023’s Galaxy Watch 6 a “<a data-i13n="cpos:1;pos:1" href="https://www.engadget.com/samsungs-galaxy-watch-6-review-evolution-not-revolution-120006375.html" [...]

Match Score: 113.90

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: 108.50

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: 102.72

Pixel Watch 4 review: A well-rounded smartwatch with a surprising advantage
Pixel Watch 4 review: A well-rounded smartwatch with a surprising advantage

<p>Everyone uses smartwatches differently. There are the people who wear them all day, those who only wear them when they’re outside, those who only use them while working out and even those w [...]

Match Score: 98.99

Oura Black Friday deals: Get up to 30 percent off smart rings right now
Oura Black Friday deals: Get up to 30 percent off smart rings right now

<p>Smart rings are becoming more ubiquitous and a more subtle way to track your everyday activity than fitness trackers or smartwatches. For Black Friday, you can save on Oura ring models. Argua [...]

Match Score: 87.16

Oura Black Friday deals: Smart rings are up to 30 percent off right now
Oura Black Friday deals: Smart rings are up to 30 percent off right now

<p>Smart rings are becoming more ubiquitous and a more subtle way to track your everyday activity than fitness trackers or smartwatches. For Black Friday, you can save on Oura ring models. Argua [...]

Match Score: 87.16