The 50-102-003 is specially designed for children. There is a special mark to tell the children the best place to put their fingers. It can monitor a child's blood oxygen saturation (SpO2) value and pulse rate accurately through a finger even if the child is moving. The 50-102-003 provides spot-check measurements of oxygen saturation of arterial hemoglobin. Widely used in hospitals, schools, home healthcare, community medical centers, and more. It is also widely used for sports, climbing, and avionics.