| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sensitivity adjustment device capable of adjusting transmission/reception sensitivity of an antenna to sensitivity depending on a purpose by a simple mechanism, and to provide a wrist watch to which the sensitivity adjustment device is applied. <P>SOLUTION: A sensitivity adjustment device 10 adjusts radio wave transmission/reception sensitivity of an antenna 4 stored in an exterior case 1 whose aperture is closed by a rear cover member 8. The rear cover member 8 includes a rear cover body 81 attached to the aperture of the exterior case 1 and a rotation member 82 arranged on a position covering the antenna 4 and rotatably attached to the rear cover body 81. The rotation member 82 includes a shield part for preventing transmission of a radio wave along a peripheral direction of rotation and an opening part 826 for transmitting the radio wave. The positions of the shield part and the opening part 826 are changed by rotating the rotation member 82 and a shielded range of the antenna 4 shielded by the shield part is adjusted to adjust the radio wave transmission/reception sensitivity of the antenna 4. <P>COPYRIGHT: (C)2013,JPO&INPIT |
