Pulse Oximeter CMS50EL Finger tip , LED , Rechargeable Battery

Pulse Oximeter CMS50EL Finger tip , LED , Rechargeable Battery

Pulse oximetry is a test used to measure the oxygen level (oxygen saturation) of the blood. It is an easy, painless measure of how well oxygen is being sent to parts of your body furthest from your heart, such as the arms and legs.