Pulse oximeter is a very important and common device to check patient bloodoxygen saturation (SpO2) level and pulse rate. As a small, compact, simple,reliable and durable physiological monitoring device, Fingertip pulse oximetergreatly enhances patient care. It is widely applied in clinic, hospital, home careenvironment, social medical organizations etc. FEATURES: 1.High brightness LEDs display SpO2, PR and Pulse bar 2.Automatically power on/off 3.Low battery indication 4.Bluetooth 4.0 for data transmission 5.Weak or unstable signal prompt provides more accurate measurements 6.Compatible with iChoicelife App