[Multifunctional]: The pulse oximeter mainly measures human oxygen saturation and pulse rate. It is suitable for families, physical care in sports, etc. In addition, it is also suitable for the elderly over 60 years old who work more than 12 hours a day.^ [Use]: Turn on the pulse oximeter and insert one of your fingers into the oximeter's rubber hole. Then release the clamp, press the button, the oximeter enters the working state. The oximeter will automatically go into standby or sleep mode after 8 seconds without a finger in it.^ [Faster Display: The oximeter uses advanced sensor technology. The test results are only displayed 5S on the screen. You don't have to wait.^ [OLED display]: High brightness, low power consumption and high brightness, even for the elderly, the oximeter values ​​can be read accurately and easily. Convenient and compact, can take care of your health at any time.^ We will give you a satisfactory solution.