The present invention relates to a washer, and the washer provides a plurality of washer settings and is formed so as to enable the changing of at least one option involved in a specific washer setting when the specific washer setting is selected from the plurality of washer settings, and comprises: an operation part formed to be rotatable so as to select the specific washer setting and the at least one option involved in the specific washer setting; a display part formed to selectively display, on the radial inner side of the operation part, input items including at least one of washer setting icons for the plurality of washer settings, option icons for the at least one option respectively involved in the plurality of washer settings, and a start icon; one command input part provided on the front surface of the operation part, and formed to input the washer setting selected by the operation part, change the at least one option, and input a signal for executing and stopping the selected washer setting; and a control part for controlling the display part such that preset information is displayed on the display part on the basis of the signals from the operation part and the command input part.