Auto-Inflation Blood Pressure Monitor w/Wide Range Cuff Wide Range Cuff fits arm sizes 9.1-16.9 inches (23-43cm) * Irregular Heartbeat Alert Function - may be a warning sign of atrial fibrillation an increased risk of stroke * Permanent Memory for Two-stores 30 readings each plus average * Personal Mode Inflation for Ultimate Comfort * Clinically Proven Accurate * Fast Easy and Comfortable * Large Easy-to-Read Digital Display * Operates on 4 AA Batteries Lifetime Guarantee Shipping Carton Size: 12 L x 10 W x 6 H