MD300CB3 is a very important and common device to check oxygen saturation (SpO2) and pulse rate. As a small, compact, simple, reliable and durable physiological monitoring device, Fingertip pulse oximeter is widely applied in clinic, hospital, social medical organization, first aid and homecare etc. Accurate Measurement Professional Guarantee 1. Unique soft silicone housing for superior comfort and fit; 2. OLED displays SpO2, PR, Plethysmogram and pulse bar; 3. 6 display modes; adjustable brightness; 4. Automatically power off; battery-low indicator; 5. Suitable for adult and pediatric;