The upper arm blood pressure monitor for safe measuring at home - with the SBM 21. The integrated arrhythmia detector warns against possible disturbances of cardiac rhythm. Using the WHO classification, customers receive clear feedback regarding their blood pressure measurements. A large memory and the additional calculation of average values help provide optimal control.WHO indicator • Arrhythmia detection: warning in case of possible heart rhythm disturbance • 4 x 30 memories with average calculation of the last three measurements - Fully automatic blood pressure and pulse measurement on the upper arm. - With WHO indicator (classification of values according to WHO guidelines). - Warning in case of possible heart rhythm disturbance. - Average calculation of the last three measurements. - Automatic pressure preselection and deflation. - Huge, easy to read LCD display. - With date and time. - With battery changing indicator. - Cuff size for upper arm circumference 22 - 36cm. - Rapid measurement period. - Medical product.