Measuring method: oscillometric Measuring range: Pressure: 0 mmHg to 290 mmHg ± 3 mmHg Pulse: 40 to 180 min ± 5% of display reading Memory (with data and time): 100x2 users Inflation: fuzzy logic controlled by electric pump automatic Deflation: automatic pressure release valve automatic Power source: 4inAA batteries 1.5V Battery life (N ° of measurements): 1000 Protection against electric shock: internally powered ME equipment (when using batteries) Weight (console cuff) whitout batteries: 380 210 g Size: 123 x 158 x h 85 mm Cuff materials: nylon and polyester Measurable circumference: 22-42 (arm).