There is a motion monitoring sensor inside the ring. When the ring is worn for first time (begin to detect), in order to ensure the data quality and reliability, the calculation of SpO2 value needs to wait until the motion monitoring sensor shows static and the static period exceeds 8 seconds, then the ring will begin to show the SpO2 data. This period will be about half minute.
In the process of continuous monitoring, the SpO2 data calculated period is 8 seconds without motivation interference, which conforms to the regulations of data calculation cycle. And the SpO2 data display refresh cycle is 1 second.