Other FeaturesFully-Automatic Measurement On The Upper Arm, Easy To Use, Large, Easy-To-Read Lcd Display, Signaling Of Operating Errors, Who Classification, Warns Of Pos. Disterbances Of The Cardiac Rhythm (Arrhythmia Detection), For Upper Arm Circumferences 22-30 Cm, Suitable For Use With Mains Adapter, Suitable For Use With Mains Adapter, Change Battery Indicator