Oximeter saturation: measurement range: 70% to 99% Measurement accuracy: 80% to 99% within the range of +- 2%, 70% to 79% within the range of +- 3%, 70% or less is not required Resolution: blood oxygen saturation +-1% Pulse rate Measuring range: 30BPM~240BPM Measurement accuracy:+-1BPM or +-1% of the measured value (larger value) Display mode monochrome 0.96 inch LED screen display, Display method Two directions, Finger-clamp pulse oximeter for hospital, home, school