Disclosed is a chair-type massaging apparatus that is capable of massaging lower legs freely and precisely in pressing angles or pressing positions with a user seated therein and allows the user to assume a desired posture without interference. A signal transmitting and receiving system is coupled to the cable. or less in a total amount of 1 wt % or less and a sodium compound in an amount of 1 ppm or less in terms of metal sodium. Each of the first and second fitting members has a threaded portion on an interior sidewall thereof.