SmartHeart Automatic Digital Blood Pressure Arm Monitor Outstanding Features Clinically accurate readings Fully automatic inflation and deflation Systolic, diastolic and pulse results 2-person memory bank holds 99-readings each Memory recall with date/time stamp Average of last 3 readings Excessive Movement Indicator Cuff Placement Indicator Hypertension Indicator Irregular Heartbeat Detection Automatic shut-off Cuff fits arm size: 8.66 16.53 (2242cm) Not made with natural rubber latex 4 AAA Batteries; d.c. 5V Type-C charging cable power option (not included