The Scope of Application: Pulse oximeter is a very important and common device to check patient blood-oxygen saturation (SpO2) level and pulse rate. As a small, compact, simple, reliable and durable physiological monitoring device, fingertip pulse oximeter greatly enhances patient care. It is widely applied in clinic, hospital, social medical organizations, first aid,Dental operation, Oxygen bar, etc. The MD300C5 is designed specially for the children. There is a special mark to tell the children the best place to put their fingers. Features: - Special design for children - Easy and simple operation - Display SpO2 , PR, Pulse bar, Plethysmogram - Low power consumption - Automatically power off - Six display modes - AAA alkaline or rechargeable batteries - Battery-low indicator - Adjustable brightness - Suitable for use in family or hospital - Small and lightweight