Review on Pulse Oximeter Fingertip: Digital Blood Oxygen Saturation Monitor For Heart Rate & SpO2 Level Monitoring - Portable LCD Pulse Oximeter With Batteries Included by David Elam

The read out is easy to read and understand. Blood oxygen and Pulse rate are displayed in large type. There is also a graph at the bottom showing your heart rhythm. And there is a bar chart showing the intensity of your heartbeat. I tried to take deep breathe and it raised my blood oxygen to 99% from 96%. It is also sensitive to any body activity that increases your pulse rate. Overall a great Heath device and easy to use.