Whether you~re participating in sports or aviation, make checking your oxygen levels and heart rate an easy and painless part of your routine. Simply clip the Insignia NS-PSOXMW1 Pulse Oximeter with Digital Display to your finger to view fast, clear and accurate results without the need for needles. Ten brightness levels let you raise or lower the illumination depending on your location, allowing you to see your results in the dark with ease. And it comes in a compact design with a lanyard that makes it easy to store and carry wherever you go. With this oximeter, you~ll have a convenient and easy way to keep an eye on your health at all times.