... Pulse Oximeter With PrinterFeatures Can be used in: hospital, home, community medical treatment, sports healthcare, etc. Can measure SPO2 and PR accurately SPO2 ... display,resolution 160*96 SPO2: 35~99% Pulse Ratio: 30~250BPM Resolution: 1% for SPO2, 1BPM for pulse ratio Accuracy: ±2% ... (70%~99%), unspecified (<70%) for SPO2, ±2BPM or±2% ...