SPECIFICATIONS: Measurement Method: Oscillometric System Display Type: Digital LCD Display Size: 58 x 39mm Measuring Range: Pressure: 30-280mmHg Pulse: 40-200 beats/minute Measuring Accuracy: Pressure: +/- 3mmHg Operating Environment: Temperature: 20+/-10°C°C Relative Humidity: ≤80% Storage Environment: Temperature: -5°C - 35°C Relative Humidity: ≤80% Dimensions: 65x75x30mm Power Source: DC3V 1W 2 x AAA battery Weight with Batteries: 120g Warranty: One year warranty