1. Big display, easy for reading 2. One key operation 3. Average function 4. Two memory zones. Display Type: Digital Form Method: Oscillometry Measurement Range:0-300mmHg, 0-40kpa (pressure) 40-200Pulse/min (Pulse) Date Memory: 60sets (Blood Pressure/Pulse rate) Accuracy: +/-3mmHg(+/-0.4)kPa +/-5%(Pulse) Pressurization: Manual Pressurization Depressurization: Automatic Constant Speed Exhaust Pressure Detection: pressure sensor Power supply: 4 batteries (4xAA) Battery Management: 3Mins Power-off/Low battery indicator Operating Environment: +5°c- +40°c; 30-85%RH Storage Environment: -20°c- +55°c; 10-95%RH Dimensions: 150mmx120mmx85mm Cuff size: 480mmX145mm