Measuring Method : Oscillometric System. Fully automatic, accuracy and reliable. Systolic, diastolic and heart rate measurement. Large LCD, jumbo size digit and one-touch button. 128 Memories. Power Source: 1.5V x4 Alkaline Batteries. 1.5min. auto power off, power saving function. Intelligence voice system, smart guiding and reminding. Range : Pressure:0~300mmHg; Pulse:40~ 200/min. Accuracy : Pressure ‚±3 mmHg; Pulse ‚±5% Working temp. & Humidity : 5 ~ 40’, 30 ~ 85% RH Storage temp. & Humidity : -20 ~ 60’, 10 ~ 95% RH Dimensions : 260(W) X 80(D) X 70(H) mm Weight : Approx. 850g Accessories : Arm Cuff, Instruction Manual Place of Origin : Made in China Lead Time : 40 ~ 45 days. Dimensions : 260(W) X 80(D) X 70(H) mm Weight : Approx. 850g.