An electronic apparatus that includes a housing for housing an electronic component and an antenna body, the housing having a base body formed of a plate section and a side surface section, and a cover for covering an edge of the base body, the plate section including an antenna housing section and a protruding section, whereas the side surface section including an opening for communicating to the outside of the housing, and the antenna body having a plate piece-like shape with a length to be housed in the antenna housing section, having an antenna for radio communications and a bearing section with an insertion hole which penetrates front and back surfaces of the antenna body to receive insertion of the protruding section, the antenna body being housed in the antenna housing section between the plate section and the cover, and protruding from the housing when being rotated.