![The Oura Ring Is a $300 Sleep Tracker That Provides Tons of Data. But Is It Worth It? | Reviews by Wirecutter The Oura Ring Is a $300 Sleep Tracker That Provides Tons of Data. But Is It Worth It? | Reviews by Wirecutter](https://cdn.thewirecutter.com/wp-content/media/2020/09/oura-lowres-5.jpg?auto=webp&quality=60&width=570)
The Oura Ring Is a $300 Sleep Tracker That Provides Tons of Data. But Is It Worth It? | Reviews by Wirecutter
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Sensors | Free Full-Text | The Promise of Sleep: A Multi-Sensor Approach for Accurate Sleep Stage Detection Using the Oura Ring
![The Oura Ring Is a $300 Sleep Tracker That Provides Tons of Data. But Is It Worth It? | Reviews by Wirecutter The Oura Ring Is a $300 Sleep Tracker That Provides Tons of Data. But Is It Worth It? | Reviews by Wirecutter](https://cdn.thewirecutter.com/wp-content/media/2020/09/oura-lowres-1.jpg?auto=webp&quality=60&crop=1.91:1&width=1200)
The Oura Ring Is a $300 Sleep Tracker That Provides Tons of Data. But Is It Worth It? | Reviews by Wirecutter
![The Oura Ring Is a $300 Sleep Tracker That Provides Tons of Data. But Is It Worth It? | Reviews by Wirecutter The Oura Ring Is a $300 Sleep Tracker That Provides Tons of Data. But Is It Worth It? | Reviews by Wirecutter](https://cdn.thewirecutter.com/wp-content/media/2020/09/oura-lowres-5.jpg)
The Oura Ring Is a $300 Sleep Tracker That Provides Tons of Data. But Is It Worth It? | Reviews by Wirecutter
![Marco Altini, PhD on Twitter: "There's a new independent validation out looking at the accuracy of commercially available HRV apps and sensors Lowest median error: 🥇 HRV4Training + H10 (3%) 🥈 Oura Marco Altini, PhD on Twitter: "There's a new independent validation out looking at the accuracy of commercially available HRV apps and sensors Lowest median error: 🥇 HRV4Training + H10 (3%) 🥈 Oura](https://pbs.twimg.com/media/EwGwrENWgAMNbAc.jpg:large)