Aug 22 Pulse Oximeter
If you play sports, exercise or just want to check your heart rate and blood-oxygen levels, there is a handy item called a pulse oximeter. These units are also used by pilots and mountain climbers since blood-oxygen levels are important at high altitudes. You attach it to your finger and the tiny machine does the rest. They are very simple to use, portable and accurate. Most units use AAA batteries and are good for adults and children weighing at least 25 pounds.
