Digital arm blood pressure monitor Features: Measuring range HV / LV: 0kPa ~ 37.3 kPa (0mmHg ~ 280mmHg) Pulse: (40~199) times / min Measurement accuracy Static pressure: ± 0.4kpa (± 3mmHg) Pulse: Reading the value within ± 5% Operating temperature (Wet) Temperature: 5 ? ~ 40 ? Humidity: 10% RH ~ 90% RH Resolution rate 0.1kPa(1mmHg) Measuring method Oscillometric Memory 90 groups Display:LCD display Body color:White Product Size:Long 153mm wide 90mm thick 48mm Weight About 380g (No battery) Power Supply 6V (AA.1.5V battery×4) Standard Accessories Dry battery4, manual