Fingertip Pulse Oximeter 2 Aaa Batteries Included

This Pulse Oximeter is a portable, compact, non-invasive, measuring tool to determine the amount of oxygen the body is carrying. Attaching painlessly to a fingertip, it sends two wavelengths of light through the finger to measure pulse rate and how much oxygen is in the system. Simple to use, just press one button to "wake" the unit and move it into measurement