A pocket-sized device which fits onto an adult finger (also suitable for children from 4 years upwards) and measures blood oxygen saturation levels and heart pulse rate which are clearly displayed on a colour OLED screen. With 4 display directions, brightness control, Sp02 and heart pulse rate displays, heart rate waveform and bar graph displays the oximeter is easy to read. This listin is for a blue colour oximeter. Suitable for use at home or by healthcare professionals. The oximeter is battery-operated, accurate, convenient and easy to use allowing you to monitor blood oxygen levels quickly, discretely and painlessly wherever you are, whenever you wish. Working on the principle that oxygenated blood is a different colour from de-oxygenated blood, the oximeter uses red and infrared light to compare the ratio of oxygenated to de-oxygenated blood giving a highly accurate measure of the oxygen saturation percentage of the blood. Running off 2 x AAA Duracell batteries, which are included meaning your oximeter is ready to go when you receive it, with an automatic switch-off after 5 seconds of inactivity to save power, and a running life of 30 hours of continuous operation this device could not be more long-lived and reliable. The battery low indicator means you have plenty of warning to replace the batteries. Australian Register of Therapeutic Goods (ARTG) regn code no 136606/ certified by FDA in the USA and CE,TUV in Europe. Please consult your GP before using medical devices for diagnosis purposes. You need to be aware of the parameters of use of the device as outlined fully in the instructions, eg. it is not suitable for use during sporting activity. Note that this device is not designed for continuous monitoring.