Bests & Worsts Reviews from Amazon

I had a blood transfusion recently, due to low hemoglobin counts of my blood (HGB). That is the part of the blood that carrys oxygen. While in the hospital , they would put some device on the tip of a finger, to measure the oxygen levels in me. This week I decided to order one. After reading different reviews on Amazon, I decided to order this one. It came in a few days. Unfortunately, I had to return to the hospital this week on a differant matter, but took this Oximeter with me to test it out. In the few days I was there, I would often test this one out, compared to the devices the nurses used. Each time, mine would be exact or 1 to 2 points off. Nice!!!! Also, I like the fact that it's backlit and it can be read from multiple angles....D.D