support 6 display modes(include big font mode)

lightweight and easy-to-use

color OLED simultaneously displays testing value and plethysmogram

adjust the parameters in friendly menu

manually adjust the direction of interface

low battery voltage indicator

visual alarm function

automatically switch off while no signal

standard two AAA1.5v alkaline batteries support more 30 hours continuous work

advanced DSP algorithm inside decreases the influence of motion artifical and improves accuracy of low perfusion