1. Large lcd size: 55 x 44mm with height 18mm. 2. 2 x 90 groups memory function. 3. Average calculating for the latest 3 times measurement value. 4. Blood pressure classification (who) indicator. 5. Irregular heartbeat (ihb) indicator. 6. Accuracy: pressure +/-3mmhg pulse+/-5%. 7. Year/month/date/time function. 8. Automatically inflate and deflate. 9. Power by 4 aa size alkaline batteries or ac/dc power supply. 10. Beep alarm. 11. Automatic power-off function. 1. Product size: 130x109x60m m 2. Gift box size: 160x85x130mm 3. Meas: 445x347x283mm, 20pcs /ctn 4. N.W/g.W.: 9.6/10.3kgs 5. 20': 15, 000 pcs / 750ctns 6. 40': 30, 000pcs / 1, 500ctns