Features: - Using the oscillometric blood pressure measurement, accurately measure the blood pressure. - LCD digital display, legible and convenient to use. - Intelligent voice pressure monitor measure your blood pressure and pulse rate at the same time. - WHO warning message function and irregular heartbeat measurement function. - Double mode, each of the 120 set of measurements of memory. - No operation in 1 minutes it will automatically shutdown, great for home and medical use. Descriptions: Power mode: 4*AAA battery (not included) Display: LCD digital display Measuring method: pulse scanning/oscilloscopic measurement Measuring range: 20 ~ 280mmHg Accuracy: ± 3mmHg (pressure), ±3%(Pulse rate) Pulse rate: 40~199 times / min Pressure detection range: 0kPa-37.33kPaa Memory: 2x120sets Cuff range: 23-33cm Storage temperature: -20~55° Storage Humidity: 15%~90%RH Operating temperature: 10~40° Operating Humidity: 40%~85% Specifications: Material: ABS plastic Size: 120*108*50mm/4.7*4.3*2" Color: Black, Gold