Anonymous6 years ago000How does it look, does the sensor for measuring the oxygen content in the blood work now?Show in original language (German)louisl576 years ago • purchased this product000purchased this productThe function has supposedly been activated since 20.02.2020 and will be gradually distributed to the Charge 3 as part of a firmware update. I haven't received it yet, but I'll wait for the next few days.Show in original language (German)Comment