The Beurer PO30 Pulse Oximeter measures arterial oxygen saturation (SpO2 ) and heart rate (pulse frequency. Small and light, the PO30 is convenient and portable for ease of use at home or on the move. The Beurer PO30 is particularly suitable for persons with heart failure, chronic obstructive pulmonary diseases, bronchial asthma and similar. The Beurer PO30 is also suitable for sports at high altitudes such as mountaineering, skiing and aviation sports. The easy to read colour display features 4 auto-adjustable vertical or horizontal formats, adjustable display brightness and graphic pulse display. Other features include automatic switch-off and a low battery indicator. The Beurer PO30 includes a strap and belt pouch. 5 Year warranty. German Design and Engineering.