The Microlife Ultimate Automatic Blood Pressure Monitor meets all of the American Heart Association's recommendations for home blood pressure monitors: third party validations for accuracy, the ability to take 2 or more readings and average them, and the ability to store readings and transmit them to your doctor. Medical Grade Accuracy: Microlife blood pressure monitors deliver the highest standards of accuracy from BHS and DABL, the world's leading authorities for accurate blood pressure measurement. Irregular Heartbeat Detection: This patented feature detects the appearance of an irregular heartbeat during measurement and gives a warning signal with your reading, while still providing an accurate blood pressure measurement. Microlife Averaging Mode Technology: The American Heart Association recommends taking 2 or more readings and averaging them for a more accurate result. With the flip of a switch, the Microlife Ultimate Blood Pressure Monitor does this automatically! Traffic Light Indicator: Now you can instantly see how your blood pressure reading compares to standards set by the National Institutes of Health with this built-in feature. Blood Pressure Analyzer Software: Includes USB cable and software for connecting the monitor to your PC. Easily chart and graph your measurements and share them with your doctor. Automatically stores 99 reading each for two users with time and date. Large tilted display with backlight. Includes 4 AA batteries. Batteries are pre-installed for your convenience. Includes two sizes of cuffs to fit most arms. Medium cuff fits arms 9.25" - 13.5", Large cuff fits arms 12" - 16" in circumference. AC Adapter included. 5 Year warranty. Programmable medication reminder alarm. Integrated cuff storage. Includes zippered storage case.