The Microlife OXY 300 fingertip pulse oximeter is a portable non-invasive device intended for spot-checking of the oxygen saturation of arterial hemoglobin (SpO2) and pulse rate of adults and pediatric patients. It is suitable for private use (at home, or on the go) as well as for use in the medical sector (hospitals, hospital-type facilities).

Pulse oximetry is the technology calculating the results to display a number on the oximeter’s screen that gives the percent of oxygen in blood. A finger pulse oximeter also measures the pulse rate.

The pulse oximeter uses a sensor that passes two wavelengths of light, a red and an infrared, on a thin part of the patient’s body that has got a good arterial pulse flow, usually a fingertip. It has a light indicator which along with a microprocessor compares and calculates the differences between oxygen-rich hemoglobin and oxygen deficient hemoglobin.


  • Determining oxygen saturation (SpO2) and heart rate (pulse)
  • Simple to operate, comfortable measurement
  • Lightweight and portable
  • Dual color OLED display
  • 6 different display modes
  • 10 adjustable brightness levels
  • Size: 56 x 31 x 30.5 mm
  • Weight: 56g (with batteries)
  • Low battery indication
  • Automatic switch-off
  • With carrying strap
  • 2 year guarantee