Fitbit confirmed the launch to Engadget. The devices are using a combination of red and infrared sensors to determine oxygen variation, although the company warned that it was not a relative figure. The company said it should not see large variations in its sleep if it is healthy.
This comes at a good time for Fitbit. Although Spo2 sensors are not new to wearables, adoption is spreading. Withings ScanWatch (a winner of the Engadget CES award, we would add) treats blood oxygen monitoring as a central feature. The acquisition of Fitbit by Google could change the place where you see the technology after this, but it is good to have it now if you are determined to get more information about health.