To be able to downsize an electronic apparatus having an antenna having a
plurality of antenna coils. A radio wave timepiece includes an antenna
for receiving a radio wave signal including time information and the
antenna is provided not to be projected from a contour of a timepiece
movement. The antenna includes a plurality of antenna coils wound to
laminate on a core, when the antenna 101 is used by being contained in a
metal cabinet, the antenna coil wound around an upper layer and having a
large inductance value is used, when the antenna is used by being
contained in a plastic cabinet, the antenna coil wound around a lower
layer and having a small inductance value is used, thereby, regardless of
a kind of the cabinet, the radio wave timepiece can be downsized and a
predetermined radio wave receiving sensitivity can be achieved.