This device intended for use in measuring and displayingfunctional oxygen saturation of arterial hemoglobin (%spo2)and pulse rate (PR).The device measures Spo2 and PR with aspo2 senor and displays on the OLED after certain furtherprocessing, it can be used to measure human HemoglobinSaturation and heart rate through finger. The Oximeter intended to be used for home care and medicaloutpatient measure pulse oxygen saturation and pulse rate ofadults .Oximetry is suitable for vascular diseases, respiratorydiseases, the elderly over the age of 60, working more than 12hours a day, extreme sports and alpine hypoxia environment ofblood oxygen monitoring population and chronic alcoholism