Vital organs like the brain and heart need an adequate amount of oxygen to function properly. Keep tabs on the level of oxygen in the blood with this pulse oximeter from ChoiceMMed. Painless Procedure - Featuring a non-invasive method, this pulse oximeter provides instant measurements of the oxygen level in your blood and pulse rate. LCD Display - The LCD display shows the percentage of oxygen in the blood and pulse rate. It also has a battery level indicator. Power Saving Device - This unit consumes less power and automatically shuts off when not in use. Suitable for Daily Use - This versatile device is suitable for professionals having hectic schedules, sports and outdoor adventure lovers, senior citizens, and for home and hospital monitoring.