Review on 💙 Improved CMS50NA Pulse Oximeter: High-Performance Blood Oxygen Saturation Monitor (Navy Blue) by Dangelo Toliver

It's easy for you. Insert 2 AAA batteries (not included). Press the blue button and insert your finger. Wait 10 seconds and you will see your pulse, pulse and heartbeat. It is accurate and easy to see the LED readings. This is a MUST if you have or have ever had Covid. I got this one as a replacement for the one I had (which worked exactly the same). I gave it to a friend who had Covid because it helped me a lot. This way you know when to sit or lie on your stomach when you are sick. Or when to go to the hospital. Anything under 90 is bad for a normal person (some people under 92 are bad). There is no strap or lace for this. I miss that. However, this is optional. Having it on a lanyard made it easier to find when I was sick. But then again, it really isn't necessary. Also, it's not dark blue. The title of the entry uses this color term. It's more like a sea wave (very similar to the photo and not like in words)