The CMS50D Pulse Oximeter adopts the Photoelectric Oxyhemoglobin Inspection Technology in accordance with Capacity Pulse Scanning and Recording Technology making it a handy instrument to measure pulse oxygen saturatioin and pulse rate through the finger. The product is suitable for being used in family, hospital, oxygen bar, community healthcare, physical care in sports (It can be used before or after doing sports, and it is not recommended to use the device during the process of having sport) and etc. Integrated with SpO2 probe and processing display module ? Small in volume?light in weight and convenient to carry around. Easy to operate.