Display system: Extra-large LCD with digital display system Talking function (optional) Measuring method: Oscillometric method, automatic inflation, automatic measurement,60 times memory with time and date displaying Pressurization: Automatic air inflation by an imported air pump Deflation: Automatic exhaust Measuring accuracy: Within 3mmHg (0.4kPa) Blood pressure measuring range:20mmHg-300mmHg (2.7kPa-40kPa) Pulse rate range:30-160/min Pulse rate accuracy: Within 5% Power source:4 x AA size batteries Classification: Internal powered Equipment Type B Automatic power off: To be automatically cut off after 1 minute of nonuse to save energy