Review on Track Your Oxygen Levels And Heart Rate With IProven Fingertip Pulse Oximeter – Includes Battery, Case, And Lanyard In Blue by Jerome Godwin

Once I figured out how long I had to hold button… just home from open-heart surgery so I decided to keep an eye on my O2 level. Good product appears to work easily enough and appears accurate enough. It didn’t come with any instructions not that I expected much but when I first put it on my finger I didn’t know what to do so I held it down for several minutes-Not necessary! Just click it over the finger to engage it and then let it do its thing!