Features:[Compact Structure] Portable to carry and easy to use.[LCD Digital Display] Large LCD display screen with backlight for easy data reading.[Wide Cuff Range] Fits the upper-arm with a circumference between 8.66 inches and 16.54 inches(22~42cm).[Measuring Principle] Adopts the oscillometric method for professional, fast and accurate results of blood pressure measurement.[Intelligent Inflation] Reduce the uncomfortable feeling by incorrect inflation, shorten the measuring time and prolong the usage lifetime of the cuff.[One-button Operation] Automatically measuring systolic blood pressure, diastolic blood pressure and pulse rate, convenient to use.[Blood Classification Index] According to the blood pressure classification by the WHO / ISH. Easy to check your blood pressure and classification index.[IHD Function] Irregular Heartbeat Detection can mind you the abnormal physical condition.[Dual User Data Record] This blood pressure monitor automatically stores 2×90 sets of measurement readings. The earliest record will be replaced by the latest measurement value when there is more than 90 sets each user.[Time Display] You can set year, month, date, hour and minute.[Automatic Power-off] Auto power off after 3 minutes to save the battery life.[Dual Power Supply] 4 * AAA battery (NOT included) or AC adapter (NOT included). You can select a more suitable power supply mode according to different situations.[Wide Application] It is expected to be used at home or in the hospital, intended for people over 12 years old.