Acoustic alarm device for watches

摘要

An alarm device for a watch mounted in a recess provided in an upper portion of the watch case, for example in the upper portion of the band connecting portion of the watch case. The alarm device comprises a vibration plate secured to the bottom of the recess, a watertight sealing member, a cover for the vibration plate and securing means such as a screw for fixing the vibration plate to the recess through the watertight sealing member.