Are you looking for an oximeter that you can easily take to work or on the go? The Beurer PO40 oximeter is small and light, which means you can take it with you in your bag without any problems. This way, you can perform a reading when and whenever you want. Place your finger in the oximeter, and you'll see the measurements on the display. Apart from the blood oxygen saturation levels, you can also read your heart frequency. When you don't perform the reading correctly, you receive a notification. After the reading, the device automatically shuts off.