Perfusion Index | Pulse Rate | One Button Operation | Oxygen Saturation. Do not have nail polished or with fake nail. Do not have long nail. Screen Display: Two color OLED screen. i3.757b4Hnr4Hnrk5" style="box-sizing: border-box; -webkit-tap-highlight-color: transparent; outline: 0px; margin: 0px; padding: 0px; height: 9389.28px; position: absolute; top: 0px; visibility: hidden; width: 1036.67px; z-index: -1;">.
