Beurer Pulse Oximeter for Determining Arterial Oxygen Saturation and Heart Rate The Beurer PO30 pulse blood oxygen monitor is easy to use and completely pain-free. Simply clipped to your finger tip, the PO30 emits two rays of light with differing wave lengths to measure your arterial oxygen saturation (SpO2) and heart rate. This medically certified technique can be used to detect underlying illnesses such as cardiac insufficiency, respiratory diseases, asthma or even heart failure. Also suitable whilst taking part in sports at high altitude, the PO30 is lightweight and comes with a strap and belt pouch so you can keep it close to hand wherever you go. The large colour display offers 4 viewing options and adjustable brightness. Accessory List: product, strap & belt pouch, batteries & instruction booklet Depth: 32 MM Height: 61 MM Width: 36 MM Power Type: Battery Quick and easy measuring of arterial oxygen saturation, heart rate and perfusion index Perfect for those at risk of heart failure, copd and bronchial asthma Suitable for high-altitude sports Colour display with adjustable brightness Grpahic pulse display Small and light-weight Automatic switch off function Battery operated with low battery indicator Certified medical device