Measure your Oxygen Saturation (Sp02) and Pulse Rate. Ideal for monitoring respiratory conditions; pre/post-exercise and pre/post-operative conditions; Low perfusion: 0.2%; Portable and convenient; Alarm function; Dual colour OLED, large font, multidirectional display. Your healthcare professional will advise you whether this product is suitable for you/ your condition. Always read the label and instructions. Use only as directed. If symptoms persist see your healthcare professional.