A wearable electronic device (100, 200, 300, 700, 900) comprising: a metal housing (211, 301, 610, 800, 910) configured to be used as an antenna radiator and electrically connected to a communication circuit; at least one metal strap (120, 130, 220, 230, 930, 931) coupled to at least one region of the metal housing; a non-conductive member (2213, 331, 512, 820, 821) comprising a non-conductive material disposed between the metal strap and the metal housing, wherein the non-conductive member (2213, 331, 512, 820, 821) electrically insulates the metal strap from the metal housing; the wearable electronic device being characterised in that it further comprises: a metallic coupling member (121, 131, 221, 231, 330, 331, 510, 630, 920, 921) coupled to an end portion of the metal strap (120, 130, 220, 230, 930, 931), joined to a strap joining portion (114, 115, 214, 215, 310, 320, 611, 811, 812, 911, 912) of the metal housing (211, 301, 610, 800, 910), the metallic coupling member having the non-conductive member (2213, 331, 512, 820, 821) disposed on a contact surface thereof; and a hinge pin disposed in the metallic coupling member wherein both ends of the hinge pin protrude from the metallic coupling member and penetrate the metallic coupling member and the non-conductive member (2213, 331, 512, 820, 821), wherein the metallic coupling member (121, 131, 221, 231, 330, 331, 510, 630, 920, 921) is joined to the metal housing such that the protruding end portions of the hinge pin are joined to the strap joining portion (114, 115, 214, 215, 310, 320, 611, 811, 812, 911, 912) of the metal housing (211, 301, 610, 800, 910). a metal housing (211, 301, 610, 800, 910) configured to be used as an antenna radiator and electrically connected to a communication circuit; at least one metal strap (120, 130, 220, 230, 930, 931) coupled to at least one region of the metal housing; a non-conductive member (2213, 331, 512, 820, 821) comprising a non-conductive material disposed between the metal strap and the metal housing, wherein the non-conductive member (2213, 331, 512, 820, 821) electrically insulates the metal strap from the metal housing; the wearable electronic device being characterised in that it further comprises: a metallic coupling member (121, 131, 221, 231, 330, 331, 510, 630, 920, 921) coupled to an end portion of the metal strap (120, 130, 220, 230, 930, 931), joined to a strap joining portion (114, 115, 214, 215, 310, 320, 611, 811, 812, 911, 912) of the metal housing (211, 301, 610, 800, 910), the metallic coupling member having the non-conductive member (2213, 331, 512, 820, 821) disposed on a contact surface thereof; and a hinge pin disposed in the metallic coupling member wherein both ends of the hinge pin protrude from the metallic coupling member and penetrate the metallic coupling member and the non-conductive member (2213, 331, 512, 820, 821), wherein the metallic coupling member (121, 131, 221, 231, 330, 331, 510, 630, 920, 921) is joined to the metal housing such that the protruding end portions of the hinge pin are joined to the strap joining portion (114, 115, 214, 215, 310, 320, 611, 811, 812, 911, 912) of the metal housing (211, 301, 610, 800, 910). a metallic coupling member (121, 131, 221, 231, 330, 331, 510, 630, 920, 921) coupled to an end portion of the metal strap (120, 130, 220, 230, 930, 931), joined to a strap joining portion (114, 115, 214, 215, 310, 320, 611, 811, 812, 911, 912) of the metal housing (211, 301, 610, 800, 910), the metallic coupling member having the non-conductive member (2213, 331, 512, 820, 821) disposed on a contact surface thereof; and a hinge pin disposed in the metallic coupling member wherein both ends of the hinge pin protrude from the metallic coupling member and penetrate the metallic coupling member and the non-conductive member (2213, 331, 512, 820, 821), wherein the metallic coupling member (121, 131, 221, 231, 330, 331, 510, 630, 920, 921) is joined to the metal housing such that the protruding end portions of the hinge pin are joined to the strap joining portion (114, 115, 214, 215, 310, 320, 611, 811, 812, 911, 912) of the metal housing (211, 301, 610, 800, 910).