Disclosed is a watch-type mobile terminal, and a watch-type mobile terminal system having the same. The watch-type mobile terminal includes: a terminal body configured to be mountable to a mounting device having a contact pin, and having a first case and a second case which form an inner space of the terminal body by being coupled to each other; a printed circuit board disposed at the inner space; and a coupling member configured to couple the first case and the second case to each other by passing through the printed circuit board, and electrically connected to the printed circuit board, wherein when the terminal body is mounted to the mounting device, the coupling member contacts the contact pin to thus electrically-connect the printed circuit board and the mounting device to each other.