Patent ID: 8267787

Claim:
A controller, comprising: a housing; and a key for inputting provided for protruding and retreating movement on said housing; said housing having a front face, a rear face, and an upper face which connects said front face and said rear face to each other and which is disposed at an upper position when the housing is grasped; said key having a body having one end inserted in an opening formed in said upper face of said housing and another end exposed to an outside of said housing, and an extension extending along said upper face of said housing from the other end of said body to the outside farther than an end edge of said opening, said upper face of said housing having an offset portion being formed at least on a side of said front face and on a side of said rear face with respect to said opening and being concave toward an inner side of said housing, and said extension being formed to cover said offset portion.