Finger Pulse Oximeter
When we came down with COVID this was amazing. I was able to keep an eye on mine and the kids oxygen levels to decide if we needed to go to the hospital or not. When my moms oxygens dipped below our comfort level we took her into the hospital right away to get treatment for COVID Pneumonia as soon as she needed it.

Amazon Link – https://amzn.to/3RljNYC