ADC Advantage 6021NSA Automatic Digital Blood Pressure Monitor with Storage Case, BHS AA Rated, Small 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 Small Adult cuff fits arms measuring between 6.7 inches to 8.7 inches (17 cm to 22 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 Meets or exceeds EN 1060-1 and EN 1060-3 and is backed by a five-year warranty; British Hypertension Society (BHS) AA rating ensures unrivaled accuracy