Bests & Worsts Reviews from Amazon

I bought this pulse oximeter after reading about the rapid decline of oxygen saturation in the blood of some of the sickest coronavirus patients. I wanted to be able to check my oxygen level at my own pleasure without going to a physician's office. This monitor works great in that the results are immediate, easy to read, and require only battery power. I love the large size of the numerals on the monitor because I can read them without my glasses. I also like that the battery power shuts off a few seconds after use so the batteries should last a long time.