Beurer PO40 Pulse Oximeter | Measures heart rate, arterial oxygen saturation, and perfusion index for those with medical conditions | Suitable for high-altitude sports | Medical device Grey. Product details: Measurement of arterial oxygen saturation (SpO2), heart rate (pulse), and pulse modulation index (PMI). Symbol display for inaccurate measurement. Particularly suitable for persons with: Heart failure, Chronic obstructive pulmonary diseases, Bronchial asthma. Also suitable for sports at high altitudes. Colour display with 4 available views. Adjustable display brightness. Graphic pulse display. Small and light – for use at home and on the move. Automatic switch-off. Low battery indicator. Incl. strap and belt pouch. Medical device. You can easily determine your arterial oxygen saturation, heart rate, and pulse modulation index with this small device.