Features
▲ Can measure SpO2 and Pulse Rate accurately
▲ SpO2 and Pulse Rate display, Pulse Rate waveform and bar graph display
▲ Battery voltage low indication
▲ OLED display(two color), Four directions and six modes
▲ Screen brightness adjustable
▲ Shut off automatically when no signal
▲ 5 Color available: Grey, Green, Purple, Blue