XcelTrax™ Air Tall Walker Boot, Medium, 1 Each Heel Cups Wrist circumference: about 275mm Instrument Accessories Wrist circumference: about 275mm BMI (easy scroll method) * Hold Release Zero KG LB Clear Enter functions * Auto Zero 5 minute auto off (AC mode disabled) low battery indicator * Wheels and handle for maximum portability * Updatable firmware * RS232 Output Port * 6 C cell batteries (not included) or 120V AC adapter (included) * Metallic Gray * Weight capacity: 600 lb 272kg * 1 Year Warranty * Specifications Capacity: 600 lb 272 kg Resolution: 0 women's 8½ 11½ The soft nylon foam liner has an integrated pump design making the pneumatic liner simple to inflate and adjust