Now, there's a quick and accurate way to monitor your blood pressure with the easy-to-use Color Doctor™ Blood Pressure Monitor! Simply wrap it around your wrist, press the start button, and within a minute you'll have a clear and accurate reading on the color-coded, easy-to-read LCD display. A green screen means your blood pressure is in the normal range, yellow means your pressure is elevated and a red screen warns you that your blood pressure is very high. Stores up to 90 readings for two people so you can track your results. Includes a bonus storage case. Req. 2 "AAA" batteries (sold separately). Plastic. 2 1/2" x 2 1/2".