An oximeter is a device that processes the heart rate of the human body and the level of oxygen in the blood. The amount of oxygen is measured by placing an oximeter in the region of the fingertips. Anyone can use it. When the oxygen saturation goes asleep 60 percent, the heart, liver, kidneys, etc. can be damaged. When the oxygen saturation in a person's body is low, it becomes hard to easily have the same opinion if there are no respiratory problems. This is especially the deed once some patients take into account Covid-19, doctors said. The pulse oximeter is the most obedient instrument for this type of problem.