Digital blood pressure monitor is using to Measure your blood pressure at home and keep the record of the measurements, the record will show you and your doctor How much your blood pressure changes during the day. Your doctor can use the measurements to see how well your medicine is working to control your high Blood pressure. Also, measuring your own blood pressure is a good way to take part in managing your health. Function: Fuzzy Logic technology; Automatically inflate and deflate; Automatic power-off function; Power: 2 AAA size alkaline batteries; 60 groups memory function; Measurement Range: Pressure: 20mmHg~299mmHg; Pulse: 40~200 times/min; Measurement Accuracy: Pressure: +/- 3mmHg; Pulse: +/- 5% of reading. Packing: Gift Box Size: 35*96*84mm; 48PCS/CTN CTN Size: 473*400*195mm; CTN G. W: 11.0kg 20 Feet Container: 31, 104PCS / 450CTN 40 Feet Container: 65, 664PCS / 942CTN