The Fingertip Pulse Oximeter device is designed to spot check Oxygen saturation of arterial Hemoglobin (SpO2 - concentration of Oxygen in the blood) and measure pulse rate. Features a clear bar graph display and auto power off. The Fingertip Pulse Oximeter is a non-invasive, pain-free device designed to spot check oxygen saturation of arterial Hemoglobin (Sp O2 - concentration of Oxygen in the blood) and measure pulse rate. With its PR waveform and bar graph display, simply place finger on the sensor and blood oxygen saturation and pulse rate will be displayed. The Fingertip Pulse Oximeter by Kinetik features an auto power off, low voltage indicator and a display format memory. The Kinetik Approved Pulse Oximeter\'s device is compliant with European medical device regulations and is a Class IIa Medical Device. So rest assured you\'re buying a quality product. Pack contains1 x ANDON CMS50D2 Advanced Finger Pulse Oximeter1 x Lanyard2 x AAA Batteries1 x Instruction Manual Key features of Kinetik Fingertip Pulse Oximeter Perfusion Index (PI) measurement in % PR waveform and bar graph display Batteries included Auto power off Low voltage indicator Display format memory