Clinically validated AA standard - European Society for Hypertension (ESH) +/-3% accuracy. One button operation - with latest 3rd generation fully automatic measurement technology. Bluetooth connectivity ( iOS, Android) - Free A&D Connect App. Atrial Fibrillation screening with clinical validation by Professor Kario DOI: 10. 1111/jch. 13076. Irregular Heart Beat (IHB) indicator - LCD only