It is an automatic electronic blood-pressure monitor for the blood pressure measurement at wrist position, it could measure the blood pressure value and pulse quickly and conveniently. It will calculate the last three times measured averages. It has a large LCD screen with backlight, WHO caution stripe, IHB indicators, though the old people can see the measuring results clearly. When you are using it, the wristband will inflates automatically, which is an intelligent electronic device. The wrist blood pressure monitor is designed for two users with easy access buttons, the date and time settings record the measuring time correctly, 180 sets of storage for two users, each one 90 sets. Accuracy: Pressure is less than 3mmHg, pulse is less than 5%, IHB arrhythmia detection. Light and compact, Easy to carry, suitable for health care (medical field, families and adult), quality-assured, FDA approved. Auto power off: two AAA alkaline batteries, auto power off when no operation for 1 minute, voltage power detection, low power consumption. The last three measuring average memory. Using oscillometric measuring method, intelligent detection, high accuracy. On button operation, easy to use. WHO Classification Indicator & Irregular Heartbeat (IHB) Indicator. Systolic & diastolic blood pressure and pulse rate display. The clock function.