Patent ID: 7137732

Claim:
A portable timepiece comprising: a case body having an annular protrusion part to whose inner periphery there is attached a cover glass; an annular bezel rotatably disposed around the annular protrusion part; an annular gasket made of an elastic material and interposed between the bezel and the case body in a state giving a frictional force to the bezel and the case body to maintain the bezel in a desired rotated position with respect to the case body; and a holding mechanism which is provided separately from the gasket and which releasably holds the bezel in a stationary state with respect to the case body, the holding mechanism comprising a slip-preventing part provided in the case body, a lock member movably provided in the bezel so as to contact with the slip-preventing part, and a rotatable holding ring which has an operating face pressing the lock member to the slip-preventing part and capable of performing a rotating operation.