Specifications: Measurement Method: Oscillometric Display: Liquid crystal digital display Measruing range Pressure: 0 - 300mmHg (0kPa~39kPa) Pulse: 40-200 beats/Minute Accuracy Pressure: within+-3mmHg (0.4kPa) Pulse: within +-5% Min. scale: 0.1kPa/1mmHg Memory: Stores up to 60 measurements Automatic power Off: About 30 seconds after measurement is complete Battery Type: 2 AAA Batteries Battery life : about 2 months with 3-min. usage per day Storage condition: (-4~131)F, (10~95)%RH Operation condition: (41~104)F, (30~85)%RH Dimensions (approx.): Monitor: 65?8?8mm Cuff: fits wrists 13-19cm Weight (approx.): 128g (including batteries)