| 摘要 |
PROBLEM TO BE SOLVED: To attain communication while maintaining versatility of decoration and design and substantial basic performance. SOLUTION: A metal-made rear cover member 105 encloses a lower face of a case 103 of a watch main body. A reinforcing metallic member 106 is incorporated into an inside of the case 103 at its upper face and a bezel 107 is provided in an outside of the upper face side. A watch module 108 is contained in the inside of the case 103. A lower part of the watch module 108 contains a data carrier side antenna coil 110 sending/receiving a signal through electromagnetic induction and connected to an IC substrate. The data carrier side antenna coil 110 is placed at a position apart from a rear cover member 105. Thus, even in the case that the watch main body adopts a structure that the rear cover member 105 is made of a metal and the metallic member 106 is built in the inside of the case 103, a magnetic flux path passing from the upper face of the case 103 through a side of the lower side is ensured in the case of data transmission reception. |
