Eye-level clinical scale is the most economical high-quality digital physician scale with height rod available Features 550 lb x 0.2 lb / 250 kg x 0.1 kg capacity 14 in W x 15 in D x 2.4 in H low-profile platform inline mechanical height rod (measures 30 in to 84.5 in / 76 cm to 214.5 cm) eye-level weight display and column one-inch-high LCD readouts Body Mass Index calculation integral wheels for mobility one RS232 serial port and convenient audible beep confirmation Indicator features 8 simple buttons that are easily identifiable in any language Powered by 6 AA batteries which are included or an optional AC adapter