In this case, we will refer you to our Galaxus Assistant, which provides direct contact options so that you can be helped accordingly.
https://www.galaxus.ch/help
In the event of a warranty claim, the ring is sent to a service centre for inspection. It will be checked there and, if necessary, repaired or replaced.
Blood oxygen is measured at approximately 15-minute intervals during sleep and displayed graphically in the app. A direct PDF report is not available, but the data can be exported.
It looks pretty much like the one in the picture - a bit shiny but not like a mirror or the normal black ring. In my opinion it's more of an anthracite colour. Unfortunately there is no possibility to send you a picture.