Home › Forums › COPD › CIRCUL for COPD Tagged: circul, copd This topic has 0 replies, 1 voice, and was last updated 3 years, 12 months ago by jhample. Viewing 1 post (of 1 total) Author Posts December 31, 2020 at 3:59 am #1546 jhampleKeymaster Anyone use it to track SpO2 at night? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In