NONIN ONYX 9500 FINGERPULSE OXIMETER

Incorporates the sensors and electronics into one compact, self-contained unit. Simple, automatic on/off operation, powered by 2 x AAA batteries (included) for up to 1600 spot checks or 18 hours of continuous use. Blood Oxygen Saturation is accurate to +/- two digits, Pulse Rate accurate to +/- one digit. 3 x 3 x 5.5cm.