Keeping tabs on blood pressure is as easy as checking your wrist. Simpletouse colorchanging wrist blood pressure monitor automatically inflates to the appropriate level for maximum accuracy. Large, easytoread LCD systolic and diastolic numbers are accompanied by a colorcoded display: green for normal, yellow for prehypertension, and red indicating hypertension. Portable, clinically tested blood pressure wrist cuff stores data for 2 users, up to 90 readings each, including month, date and time. Colorcoded wrist monitor is easy to use and read. Blood pressure cuff includes storage box perfect for home and travel. Automatically powers off 3 minutes after reading. Requires 2 AAA batteries (not included).Battery life is approx. 6 months when used daily. Main unit measures 2 3/4"L x 2 1/2"W x 2"H.