There is provided a brassiere made of a stretchable material for comfort. The first lens group and the fourth lens group are fixed during zooming, but the second lens group and the third lens group move on optical axis Z of the zoom lens toward the magnification side, based on an operation for operating the zoom lens from wide end to tele end, in such a manner that a distance between the second lens group and the third lens group changes. A recommended product may be presented in relation to a registered product, the recommended product selected as being complementary to the registered product. A hydrocarbon sensor monitors the presence of petroleum in the drain.