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 and so on. Features: - Small & lightweight design ( total 28g without batteries ) - Dual color OLED display - Display SpO2,PR,Pulse bar and Plethysmogram - 6 display modes - Low power consumption, automatically power off - Battery-low indicator - 2 AAA alkaline or rechargeable batteries - Adjustable brightness - Accommodates widest range of finger sizes from pediatric to adult