Medzer Digital Blood Pressure Monitor device designed for accurate and convenient blood pressure monitoring. NIBP Measurement Rated Cuff Pressure: 0 mmHg to 300 mmHg. Accuracy Pressure: ±3 mmHg or ±2% above 200 mmHg. Cuff Circumference: 13.5 cm to 21.5 cm. Stores up to 120 readings in two groups, complete with date and time stamps for tracking and comparison.