Measuring Range - 0-100% Range of Precision - 70-10% Measuring Precision - 2% Resolution - 1% Data update time - 1s Pulse Rate Measuring Range - 18-250bpm Range of Precision - 25-250bpm Measuring Precision - 3bpm Resolution - 1bpm Data update time - 1s Packing Information Working Size - 7cm*3cm*2.4cm Packing Size - 40cm*37cm*24cm N.W. - 0.075kg G.W - 0.15kg