Having a simple little computer to put on the end of your finger can save your child from hours of anguish. A finger pulse oximeter is a small device that clips on to your finger. This valuable tool monitors pulse rates, interrupted breathing, and detects the under oxygenated blood. What does this mean? This means when you or your child are struggling to breathe, the pulse oximeter will display your oxygen level so you may begin the proper treatment sooner than later. Another wonderful tidbit, you can buy it at your local pharmacy store.