A controller (100) includes a key top (10), a substrate (30), and an elastic member (20). The elastic member is provided between the key top and the substrate. The elastic member includes a pressed portion (23), a base (29), a skirt portion (24), and a pressing member (70). The substrate includes a contact (50). A direction in which the key top and the elastic member are layered is defined as a first direction (101). A direction perpendicular to the first direction is defined as a second direction (102). When viewed in the first direction, the pressing member is surrounded by an outer peripheral edge of a prescribed region (63). In the second direction, a distance between an end of the outer peripheral edge of the prescribed region on a side of a swing center of the key top and an end of a top surface (71) on the side of the swing center is longer than a distance between an end of the outer peripheral edge of the prescribed region opposite to the swing center and an end of the top surface opposite to the swing center. In the second direction, the contact is located closer to the swing center than the top surface.