Large display with lock on weight. Tray is detachable facilitating cleaning or moving. Power requirements are one 9V alkaline battery (not included) and one 3V CR2032 lithium backup battery (included) for memory. Tray dimensions are 20.6 W x 10.5 D x 4 H inch (524 W x 267 D x 102 H mm). #8440-Scale #8440-CASE UNSPSC#42182804