You can use it either personally or professionally: the finger pulse oximeter. It monitors a person's oxygen. People with certain conditions including COPD and asthma need to know what their oxygen level and heart rate are in order to avoid serious health catastrophes.
Easy, lightweight and affordable, the oximeter uses 2 AAA (included) and powers off after 8 seconds. It's easy to read and has a shock resistant cover. It can be used continuously for 30 hours and is so dependable that hospitals and medical professional rely on it for accuracy.
