Cellular phones include a power reception resonance coil arranged inside a first outer surface side of a housing, a power extracting unit for extracting power of an induction current of the power reception resonance coil, a magnetic core that has one end arranged inside the first outer surface side and the other end arranged inside a second outer surface side of the housing, and penetrates into the power reception resonance coil, and a printed board that is arranged in a space between the first outer surface and the second outer surface and has an area where circuit elements are not arranged on a periphery of the core.