Omron M3 Comfort tonometre + 220V AC power supplyExtended INTELLI cuff (22 42cm) with easy tightening, replaces 2 cuffs (standard + for strong arm). Clinically proven accuracy according to the European Society of Hypertension protocol measurement is as accurate as the doctor's listening method. Color indicator of hypertension for easy evaluation (LED next to the display) unlit = OK, orange = some of the measured values are higher than the recommended values of "healthy" blood pressure for home