A classic blood pressure monitor with the benefits of speed and accuracy at a touch of a button. Easy to use wide range cuff fits most arm circumferences measuring 22-42cm (8.6-16.5") with optional small (6.3-9.4") to Large (12.2-17.7"). Stores 60 measurements in memory. Has Atrilal Fibrilation/Irregular Heartbeat (IHB) Indicator (the risk of Afib increases with age, diabetes, high blood pressure or underlying heart disease). Easy to understand Pressure Rating Indicator. Works on 4 AA batteries, included in the box. It does have a port for an AC adaptor (does not come with an AC adaptor) .This unit is clinically validated for accuracy and Hypertension Canada recommended. Comes with a 5 year warranty.