Panasonic EW3109W Portable Automatic Arm Blood Pressure Monitor Cuff Type: Arm Operation Mode: Automatic Features: Digital Filter Technology for Accurate Measurement Flash Warning System for Hypertensive Readings Automatic Memory Feature Saves your Readings One Touch Operation--Easy to Use! Digital LCD Display Number of Users: 1 users Memory: 90 readings Cuff Circumference: Approx. 7-3/4 to 15-3/4 (20cm to 40cm) Measurement Method: Oscillometric System Measurement Range: Pressure: 0-280mmHg; Pulse Rate: 30-160 pulse/min.