The Pluggable Fragrance Warmers by Candle Warmers Etc are decorative and versatile fragrance warmers. They can be used with any outlet, both vertically and horizontally, by twisting the plug base. Ideal for above counter outlets in small room spaces. These warmers are designed using materials such as metal, glass, ceramic and porcelain. They come in an array of styles to fit your personal style, be it traditional or trendy, modern or farmhouse, cottage or Scandinavian and more! Uses NP7 Warming Bulb, which is included.