A retrieving device includes a body with at least one respiratory passageway formed in it through which a dog can breathe when holding the device in its mouth during retrieval. A closure has a skirt for externally encircling the container finish, a tamper band frangibly connected to the skirt for positioning beneath the external circumferential bead on the container finish, and a spring element for engaging the finish and biasing the closure away from the finish. The charge pump generates positive and negative supply voltages following a 1N ratio of Vdd voltage, i. The mirror has a cone shape, or a modified cone shape.