About this item  Home Health: Easily monitor your blood pressure from the comfort of your own home  Voice Broadcast Results: talking feature speaks your reading aloud, great for vision impaired; talking feature can be turned off if desired  Color Coded: Instantly see your hypertension range in color. Green: normal range; Yellow: mild high blood pressure or hypotension; Red: high blood pressure  2 users x 199 memory storage  4 x AAA batteries required