... hospital, home, community medical treatment, sports healthcare, etc. Pulse Oximeter With PrinterFeatures Can be used in: hospital, home, ... voltage indicator Friendly Operation Menu for The Function Setting Pulse sound function Alarm function; can set upper and ... %) for SPO2, ±2BPM or±2% (select larger) for pulse ratio Power: 1 rechargeable Li battery Charge manner : AC transformerInterference ...