Abstract: There is provided a wearable device, comprising connectors comprising a first connector and a second connector for interfacing with another device and/or a charger; a first switch for connecting the first connector and the second connector to a battery charging circuit of the wearable device; a second switch for connecting the first connector and the second connector to a communication circuit of the wearable device; a control unit configured to: enable an electrical connection between the connectors and the battery charging circuit, when the first switch is closed and the second switch is open; and enable communication with another device for data transfer via the connectors, when the first switch is open and the second switch is closed.

Abstract: There is provided a charger for charging a wearable device, comprising a charger head comprising a first connector with positive polarity; and a second connector with negative polarity, wherein the first connector and the second connector are arc-shaped.

Abstract: A diving computer with coupled antenna and a water contact assembly is disclosed. The diving computer has at least one radiator element located on or connected to an outermost surface of a bezel of the diving computer and a radio unit having a conductive coupling to said radiator element, for enabling wireless communication between said diving computer and external devices. A conductive water contact surface extends through the housing of the diving computer and a water contact detector circuit is arranged, as a part of an underwater condition sensing circuit, to sense an underwater condition of the device. When water establishes a current path through said underwater condition sensing circuit from the water contact surface to ground, the sensing circuit provides an indication of an underwater condition to the diving computer.

Abstract: A diving computer with coupled antenna and a water contact assembly is disclosed. The diving computer has at least one radiator element located on or connected to an outermost surface of a bezel of the diving computer and a radio unit having a conductive coupling to said radiator element, for enabling wireless communication between said diving computer and external devices. A conductive water contact surface extends through the housing of the diving computer and a water contact detector circuit is arranged, as a part of an underwater condition sensing circuit, to sense an underwater condition of the device. When water establishes a current path through said underwater condition sensing circuit from the water contact surface to ground, the sensing circuit provides an indication of an underwater condition to the diving computer.