How accurate is the Oura Ring in tracking sleep?

The Oura Ring is recognized for its advanced technology and has been praised for its accuracy in sleep tracking among wearable devices. It monitors a user’s sleep patterns by measuring various physiological signals such as resting heart rate, heart rate variability, body temperature, and movement through its embedded sensors. Numerous users and some independent studies suggest that the Oura Ring's ability to differentiate between sleep stages – light sleep, deep sleep, and REM sleep – is quite reliable. However, while it may not necessarily match the precision of medical-grade polysomnography used in sleep clinics, for a consumer device, it is considered to be one of the more precise options on the market when it comes to sleep tracking. The ring's accuracy is further enhanced by its continuous updates and sophisticated algorithms that analyze data over time, providing the user with detailed insights into their sleep quality and patterns.