1. Jumbo LCD to read the digit; 2. Two persons monitor; 3. 180(2*90) memories with date and time; 4. Average function for last 3 times measurement value; 5.Irregular Heart Beat (IHB) indicator; 6. Blood pressure classification indicator; 7. 4 AA size alkaline batteries or AC/DC adapter; 8. Dimension: 160(L)x155(W)x82(H)mm;