1 .Meassurement range: BP: 0-280mmHg (0-37.3kPa)    Pluse: 40-199beats/min. 2. Cuff pressure range:  0-299mmHg (0-39.86kPa) 3. Accuracy: Pressure ±3mmHg (0.4kPa)/Pluse ±5% of the reading 4. One key operation: Just one key to finish the whole meassurement after wearing the cuff properly 5. Intelligent pressure control: Automatically detect and provide proper pressure in the cuff 6. Memory: 2*99 groups memory (Double users) 7. Average function: Last 3 groups average meassuring value 8. Battery indicating 9. Time & Date display, WHO function display 10. Material:ABS+LCD display 11. Power source: Internal-DC 3V (2*AAA) 12. Size:Device:2.68"(W) x 2.68"(L) x 0.98"(H)  LCD display:1.95”*1.63”  Cuff perimeter:5.31"-7.68"