Abstract: An electronic cigarette device has an elongate main body including a power supply unit, electrical circuitry and a seating for a liquid reservoir. Front and back panels are slidably attached to the elongate main body and configured to move in the longitudinal direction between an extended position and a retracted position. The panels include connectors configured to slide on rail members in a longitudinal direction. The connectors include a movable portion that is movable relative to a fixed portion, and which allows movement of the panel in a direction that is transverse to the longitudinal axis of the rail members.