LCD monitor with backlight Pulse histogram and Spo2 wave display Easy to use with one-key operation Small in size, and easy to c LCD monitor with backlightAuto power-off after 8 seconds without signalLight weight of 75g, batteries includedRuns on standard AAA batteries and continuous working time is 30 hoursDisplayType LCD display1 display modeParametersSpO2, PR, Pleth bar. Pleth waveform. ...