To prevent a reception sensitivity from lowering due to a metallic material contained in another product, such as a radio-controlled clock or the like, when an antenna apparatus receives electric waves.

A mounting member 14 on which a wrist watch 50 that is radio-controlled is mounted, a containing recess section 15, capable of containing the mounting member 14, and a fall-prevention member 16 are disposed at the back face of a case 10 of a clock 1 that is a radio-controlled clock. The mounting member 14 which is made up of a plate-like member in the form of an arm, is coupled to the case 10 pivotably by using a hinge. The wrist watch 50 is mounted on the mounting member 14 being kept horizontal, such that respective directions of core axes of an antenna 20 and of an antennal 60 are parallel to each other. The fall-preventing member 16 prevents the apparatus from tumbling backward due to the weight of the wrist watch 50, which is mounted on the mounting member 14.