An information device to be worn on the wrist of a user has a case, a circuit block disposed in the case, and a first electrode terminal disposed in the case and electrically connected to the circuit block. A band is pivotally connected to the case for undergoing pivotal movement within a range of angular positions relative to the case. A second electrode terminal is disposed in the band for contacting the first electrode terminal in accordance with a relative angular position between the band and the case.