Medical grade accuracy : Non-invasive and comfortable spot-checking of the oxygen saturation (SpO2) and heart rate (pulse) of adults and pediatric patients Gentle usage : Simple and completely pain-free measurement Lightweight and portable : Ideal for use at home and on the move (at home, or on the go) as well as for use in the medical sector OLED Display : OLED Display with SpO2 and pulse display and bar graph display Low battery indication : Provide an visual indication of a low-battery condition on the screen