ADC Advantage 6021N Automatic Digital Blood Pressure Monitor with Storage Case, BHS AA Rated, Wide-Range Adult Navy Upper-Arm BP Cuff Measures systolic pressure, diastolic pressure, and pulse; Irregular Heartbeat Detection provides warning signal at the appearance of an irregular heartbeat Features automatic Inflation and deflation control and auto shutoff; Smart Logic Technology determines ideal inflation level Recalls last 99 readings for two different users with date/time stamp Extended-range Adult cuff fits arms measuring between 8.7 inches to 16.5 inches (22 cm to 42 cm) in circumference (incorrect cuff size can result in measurement errors; please choose carefully) Self-adjusting, D-Bar cuff is made without natural rubber latex or phthalates