1. Large LCD size: 55 x 44mm with digit height 18mm 2. 30 groups memory function 3. Average calculation for the last 3 measurement readings 4. Irregular heartbeat (IHB) indicator 5. Accuracy: Pressure+/-3mmHg; Pulse+/-5% 6. Automatic inflate and deflate 7. Powered by 4 AA sized alkaline batteries or AC/DC power supply 8. Automatic power-off function