The American Heart-Tech Wrist Blood Pressure Monitor accurately measures Systolic and Diastolic blood pressures in mmHg and heart rate in pulses/minute. Results are displayed on a large LCD screen and includes W.H.O. Blood Pressure Indicator (World Health Organization Color Coded Refence Chart for Blood Pressure Risk Classification), 60 result memory with date and time, Irregular Heartbeat Indicator and automatic cuff inflation/deflation. Cuff size range is 5.5" to 7.7". Monitor has an automatic shut-off feature after 2 minutes to preserve battary life. Comes with convenient plastic carry case. One year warranty.