This blood pressure monitor is 510K cleared and clinically validated for accurate blood pressure readings. It features a cuff that fits the upper arms with a circumference of 8.7"-16.5". The monitor detects heart rhythm disturbances and alerts users with a warning symbol. The price drops from $49.99 to $18.99. Shipping is free for Prime members, or it adds $6. 

This is an open-box item.