The present disclosure relates to an electronic device and a method of operating the same. The electronic device includes a necklace band, and a first component connected to the necklace band. The first component includes a first magnet located on a first surface of a housing of the first component, a first connection unit located on the first surface of the housing of the first component, and electrically connectable to a second connection unit located on a first surface of a housing of a second component, and a controller configured to connect the first connection unit and the second connection unit when the first magnet is attached to a second magnet located on the first surface of the housing of the second component, and receive power from the second component through the first connection unit connected with the second connection unit.