Patent ID: 7572049

Claim:
A timepiece comprising: a case band in which there is formed a bezel disposition part surrounding a cover glass; a bezel which is disposed in the bezel disposition part so as to be capable of rotation-operating in regard to the case band, and in which there are formed a positioning part comprising plural concave-convex portions juxtaposed, in a direction of the rotation, in a back face opposing to a bottom face of the bezel disposition part, and a lock part comprising plural concave-convex portions juxtaposed in the direction of the rotation; a positioning means which is attached to the case band, which permits clockwise and counter clockwise rotations of the bezel, which is elastically engaged with and disengaged from the positioning part such that, when the rotation of the bezel is stopped, the bezel is held in that position; a lock member which is disposed between the case band and a back face of the bezel so as to be movable in a diameter direction of the bezel, and which has one pair of operation convex parts alternately pushing-in-operated from an outer periphery side of the bezel for this movement, a stopper part inserted to and retracted from the lock part following upon the movement, and a holding part; and a holding means attached to the case band so as to be engaged with and disengaged from the holding part, and elastically engaging with the holding part when the lock member is moved to a position in which the stopper part engages with the lock part to thereby hold the lock member.