A switch device in a digital camera includes a knob, a body into which a shaft portion of the knob is inserted, a connecting terminal, and a switch board. The knob includes body engaging claws adapted to be engaged with an inner face of the body, terminal engaging portions each having an inclined face part, and a central protrusion and a rotation detent protrusion provided on a lower face of the shaft portion. The body includes a plurality of rotation positioning holes arranged at an inner face side of the body. The connecting terminal includes a bottom plate part having a first hole and a second hole, knob engaging claws adapted to be engaged with the terminal engaging portions, a contact part adapted to come into contact with the switch board, and a positioning projection adapted to be engaged in the rotation positioning holes.