Measuring range: Pressure: 0-300mmHG, pulse:40-200/min Measuring accuracy: Pressure:±0.4kPa(3mmHg) Pulse:±5% Min scale:0.1kpa(1mmHg) Inflation:Automatic by Electric Pump Deflation:Automatic exhaust Pressure detection:Integrated silicon presssure sensor Auto shut-off (30sec after nonuse)