FEATURES . Digital Filter Technology Yes Color Confirmation System Yes Flash Warning System No Memory 84 readings (42 readings x 2 people) One-Touch Auto Inflate Yes MEASUREMENT . Method of Measurement Oscillometric System Measurement Range Pressure: 0-280mmHg; Pulse Rate: 30-160 pulse/min. Measurement Accuracy Blood Pressure: +/- 3 mmHg Pulse Rate: +/- 5% Circumference Range Approx. 7-3/4" to 13-1/4" (20cm to 34cm) DISPLAY . Display Type Digital LCD Large LCD Display Yes Blood Pressure/Pulse Rate Display Yes GENERAL . Operating Environment 50°F to 104°F 30%-85% RH Storage Environment -4°F to 140°F 10% to 95% RH Power Source Four "AA" Batteries (included) Battery Life Approx. 500 usages ACCESSORIES . Case No Easy-Store Cuff Compartment Yes SPECIFICATIONS . Dimensions (H x W x D) 321/32'' x 647/64'' x 75/64'' Weight 1.17 lbs