1. Large LCD size: 70 x55mmwith digit height 21mm 2. 2x90 groups memory function 3. Average calculation for the last 3 measurement readings 4. Blood pressure classification (WHO) indicator 5. Irregular heartbeat (IHB) indicator 6. Year/month/date/time function 7. Accuracy: Pressure±3mmHg; Pulse ±5% 8. Powered by 4 AA sized alkaline batteries or AC/DC power supply 9. Automatic power-off function