Size: 69 x 54 x 27mm Display mode: liquid crystal display (LCD) Measuring method: intelligent pressure, oscillometric measurement Measuring range: Arterial pressure: (0-280) mmHg / (0-37) kPa (blood pressure) Pulse: (40-199) times / minute Accuracy: 3mmHg / 0.4kPa (blood pressure) 5% (pulse rate) Results: high pressure / low pressure / pulse Units conversion: mmHg / Kpa (unit) conversion default for startup is mmHg) Memory group number: 99 pairs of memory Low battery detection: LCD display low battery symbol prompts low battery WHO tip: Blood pressure warning bar indicates health status blood pressure arrhythmia prompt: LCD screen displays arrhythmia symbol Overpressure protection: automatic air pressure above 295mmHg (20MS) Function automatic power off: no operation for 1 minute automatic power off Current: dynamic current 500mA quiescent current 30mA cut-off current 20uA Working conditions: ambient temperature: 5C~40C; relative humidity: 85%; atmospheric pressure: 85 kPa ~ 105 kPa;