 Kitchens, bathrooms, corridors and genkan are likely to have built-in ceiling fixtures.Lighting is generally by fluorescent lamps and LED lamps, and most frequently in living areas features a 4-way switch.The lamp has two separate circular fluorescent tubes, together with a nightlight (formally , informally a ナツメ球, "natume-kyū," "jujube-bulb" (so-named for the shape)), and the switch cycles between "both bulbs on", "only one bulb on", "night light only" and "off".