Finger Pulse Oximeter: oximetry Four directions and eight modes Pulse sound function Alarm function 3' 65 color OLED display Finger Pulse Oximeter Feature:Can be used in hospital ,home,community medical treatment,sports healthcare,ect.Can measure SPO2,PR accurately.SPO2 and PR display,PR waveform and bargraph displayBattery voltage low indication.Four directions and eight modesLow power ...