The present invention is to provide a computer mouse having a windable output wire including a housing, a windable wire receiving device retractably mounted in the housing, and an output wire having a first end connected to the wire receiving device and a second end connected to an output plug that is inserted into a main frame of a computer. The highly conductive microcrystalline layer includes a microcrystalline material and a metal. of the respective inks of the ink set is set to V1, V2,.