Accuracy even with irregular heartbeat For hypertensive patients who suffer from cardiac arrhythmias. For the highest accuracy, Veroval® duo control combines 2 measurement methods by automatically switching to the innovative DUO SENSOR technology for an ARRHYTHMIA CORRECT blood pressure result. To better evaluate the results, the colour traffic light system on the left side of the Veroval® duo control directly describes the results as per the World Health Organisation (WHO) classification of blood pressure values. Moreover, Veroval® duo control facilitates correct measurements thanks to the smart features of correct Cuff Position, Movement Control rest indicator and the secure fit patented cuff.