This unit works with a finger pulse setup to measure cardiac pulse levels and blood oxygen levels. It is easy to use in all sorts of facilities and works with two AAA batteries and a full colour display. It can measure items with ease and uses ten brightness levels to make it easier to use. The SpO2 indication setup also makes it easier for people to analyze pulse rates as needed and can even work with six reading positions. It also has an automatic off switch and can warn the user when its battery power is running low. This is suitable for child or adult use and weighs a mere 28 grams.