Patent ID: 8608372

Claim:
A portable timepiece comprising: a module that has a contact member; a timepiece exterior assembly which has a body formed with a through hole and in which the module is accommodated; a pipe that has an insertion cylindrical portion and is fixed to the body by inserting the insertion cylindrical portion into the through hole; a push button that has a button shaft which can approach and be separated from the contact member through the pipe, and a push operation head which is continued to the shaft and is placed outside the body, in which the button shaft is formed with by screwing a second shaft portion having a diameter lager than that of a first shaft portion and having an engagement surface capable of approaching and being separated from a tip of the insertion cylindrical portion into the first shaft portion formed integrally with the head; and a biasing member that is provided so as to bias the push button toward the outside of the body so that the engagement surface is held in a state of coming into contact with the tip of the insertion cylindrical portion.