Instantly know your blood oxygen level without painful needle sticks or drawing blood! Fingertip pulse oximeter quickly, accurately and conveniently measures your pulse and oxygen saturation level any time, anywhere! Fingertip pulse oximeter quickly, accurately and conveniently measures your pulse and oxygen saturation level any time, anywhere! Perfect for non-medical periodic checks of pulse and oxygen saturation levels during sports and exercise. It's so small and lightweight that you can take it to the gym, out jogging - anywhere! Just clip it onto your fingertip and at the press of a button, the LED display shows your readings. Features pulse rate and bar graph, blood oxygen percentage reading, low battery capacity indicator and auto power off. Neck lanyard included for convenient carrying. 2.25" x 2.3" x 1.25".