A photoelectric generating means (6) is disposed proximally to the surface of the dial (21) on the back cover (3) side, and the dial (21) is made of a magnetic, optically transparent material. The support substrate (62) of the photoelectric generating means (6) is a nonmagnetic material, and the antenna (5) is located proximally to the surface of the support substrate (62) on the back cover (3) side. Because the support substrate (62) is a nonmagnetic material, external RF signals can pass through the dial (21) and photoelectric generating means (6) to the coil (52) of the antenna (5), and signals can thus be received by the antenna (5). Because the antenna (5) can be contained inside the case member (1), the appearance can be improved.