The oxygen saturation of the blood shows us an insight into the health of the body. The saturation indicates how strongly the hemoglobin is enriched with oxygen. In other words, the ratio between oxygen -rich and oxygen -binding hemoglobin is displayed. Basically, the higher the degree of saturation, the better. The task of hemoglobin is to distribute the oxygen molecules from the lungs in the body. So that all organs get enough oxygen, it is therefore very important that the red blood pigment can also bind enough O2. The oxygen saturation depends, among other things, on the pH, temperature and further factors. With our pulse oximeter you can quickly find out how the oxygen saturation As an end user, the customer is legally obliged to return used batteries. He can return old batteries th.