As this is a respiratory illness, I bought one 5 weeks ago. I assumed the worst (complete overwhelming of medical system, with home self-care) and hoped for the

As this is a respiratory illness, I bought one 5 weeks ago. I assumed the worst (complete overwhelming of medical system, with home self-care) and hoped for the best. Although I have obstructive sleep apnea and terrible circulation (often require blood draw from my hands), my waking SpO2 ranges 91 to 99 percent. https://amzn.com/B06Y2FFQB9 https://amzn.com/B06Y2FFQB9