The electronic sphygmomanometer is a convenient and feasible medical device developed by the principle of modern electronic technology and indirect blood blood pressure measurement. The principle is the oscillometric method indirectly measuring blood pressure, perceiving pulse wave in the process of deflation or inflation, and get the systolic and diastolic blood pressure by a series of complex transformations and calculations. Wrist sphygmomanometer measures "pulse pressure value" on wrist part, is perfectly applied tomost middle-aged and elderly people, especially those with high blood viscosity, poor microcirculation, and patients with vascular sclerosis for personal monitoring and can keep track of changes in their "blood pressure". Wrist type design, not the upper arm types, our wrist sphygmomanometer measures blood pressure without taking off your coat or down jacket during winter use. Digital Blood Pressure Monitor Features: 2. Measurement method: wrist type electronic sphygmomanometer, step-down measurement / oscillometric method 3. LCD Display Screen: display high/low pressure / pulse, large screen and big character with easy clear reading. 4. Blood pressure classification: WHO monitoring 5. Intelligent pressurization: Fully automatic pressurization and decompression, IHB heart rate detecting 6. Clock function: set the year, month, day, hour and minute 7. Data Storage Memory: 99 sets memory for each one, support two users. Can show the average reading of the last 3 measurement results, convenient for users to retrieve data comparison. 8.Auto Power Off: Manually shut down or let it auto power off after being idle for 1minute. 9. Unit conversion of blood pressure: Kpa and mmHg switchable 10 Over-pressure protection function: when air pressure over 295mmHg-20ms will automatically exhausts air. 11 Error prompt function: Convenient for users to find the cause of the error. 12 Low-voltage detection: detects low power under any working condition, LCD display...