Patent ID: 7210844

Claim:
A wristwatch in which a band is detachably coupled to a case band, comprising: bow feet which are protruded from the case band while forming a bow crotch receiving a case band connection end part having an operation opening of the band so as to be capable of being put in and taken out, and each of which has an attachment hole, and a coupler having been internally mounted in the case band connection end part while possessing a coupling axle which is locked to the case band connection end part, which is provided so as to be capable of being protruded and immersed with respect to an end face of the case band connection end part in its width direction, and which is inserted into and withdrawn from the attachment hole by this protrusion/immersion, and a tubular rotation body which has a female screw with which the coupling axle is meshed, which is provided while facing on the operation opening, and which is manual-rotation-operated from an outside of the case band connection end part.