In a pandemic, pulse oximeters are needed to respond in time to coronavirus disease. A minute is enough for the device to determine the level of oxygen saturation in the blood. This is called saturation. The product is delivered in a cardboard box, inside which is the device itself, a case, two batteries and instructions. The device is easy and simple to use. It looks like a large clothespin that we hook onto our index finger. For an accurate result, the nails should be without gel coating and of a reasonable length. We press the button and in half a minute we look at the result. The device shows not only the saturation, but also the pulse. In my case, saturation - 99, pulse - 48. Good indicators, you can breathe out calmly. A decrease in oxygen saturation to 91% and below is one of the characteristic signs of coronavirus infection, proceeding in moderate and severe form. If you do not smoke, and your indicators are consistently below 95%, this is a serious reason to see a doctor.
This device, I believe, in a pandemic is needed in every family. I bought it just in case, because the price is adequate. The device is quite easy to use. Shows heart rate and oxygen saturation. Convenient to carry with you - there is a case with a drawstring. Good health to everyone!