This wall plug-in night light has an on/off switch. The night light is made of ceramic and can use a max 7-watt bulb type C bulb. It is 120 volt 60Hz. The pink Himalayan salt rocks are fitted loosely inside the light and cover over the light bulb. The bulb used in this particular light is soft white and a 4 watt c7 bulb. Please see the pictures to depicting the beautiful glow during day hours and night.