Basic functions and features Parameters/Waveform: Two parameters: SpO2, Pulse Rate Waveform: SpO2 Waveform Features 1) COLOR OLED display, manual four direction adjustable 2) SpO2 and pulse monitoring, and Waveform display 3) Low-power consumption, continuously work for 20 hours 4) Small in size, light in weight, and convenient to carry 5) Low voltage alarm display, Auto power-off 6) Adjust the display interface direction manually, according to the patient observation data needs; 7) Runs on standard AAA batteries 8) Automatic power off when no signal in 8 s 9) A menu function can set up oxygen alarm limit, the upper and lower limits of PR, alarm switch, · Sound switch. switch. switch.