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While the sensor set of the rings have changed over the versions, generally they contain an [[accelerometer]], a [[Temperature Tracking|temperature sensor]] as well as an optical [[heart rate sensor]]. From these sensors the Oura calculates the following metrics:
While the sensor set of the rings have changed over the versions, generally they contain an [[accelerometer]], a [[Temperature Tracking|temperature sensor]] as well as an optical [[heart rate sensor]]. From these sensors the Oura calculates the following metrics:
[[File:Oura-ring-gen3-stealth.jpg|300px|thumb|right|A generation 3 Oura Ring, showing some of the sensors on the inside of the ring]]
==Differences between models==
==Differences between models==