The A2 Basic is an upgrade version of Microlife A1 Basic Blood Pressure Monitor. With its newest design and additional features, it allows the consumers to be able to use adapter to power up the monitor instead of batteries only. By using adapter, the consumer could save up the cost and ensures the monitor is always on the best condition ever. All Microlife blood pressure monitors have been clinically tested for special patient groups such as diabetes, end-stage renal disease, pregnancy and pre-eclampsia, hypotension and children (from age 13). - Comfortable Conical Cuff - PAD technology that helps to keep track of irregular heartbeats - Gentle+ Technology give the best comfortable inflation and deflation rate during blood pressure measurement - 30 Data Memory - Arm-movement indicator and Cuff Check indicator - Cuff Warranty (2 years), Product Warranty(5 years) - Dimensions 120(L) x 100 (W) x 82(H)mm - Weight : 315g (without batteries) - Measuring range: 30 - 280 mmHg - Batteries : 4 x 1.5V (AA) batteries