11-29-2023
13:07
- last edited on
11-27-2025
14:48
by
AndreaFitbit
11-29-2023
13:07
- last edited on
11-27-2025
14:48
by
AndreaFitbit
The Spo 2 isn’t working on my versa 4. There was a red a green light on the back, only green now
Moderator Edit: Clarified subject.
Answered! Go to the Best Answer.
Best AnswerHi @jlkipe you can learn more about it here - click to read. The red lighted oxygen sensor only works at night. The green light is for your heart rate.