Ever since I have had my Fitbit Inspire HR the saturation levels have never worked?
The box for saturation levels appears however it is always blank with no data.
Best AnswerThe oxygen variation is available only on Charge 3, Ionic, and Versa series models. I have no idea why it bothers showing a blank graph for Inspire HR, but your tracker does not have the sensor to get that information.
See How do I track estimated oxygen variation with my Fitbit device?
Best Answer