The silver glass mosaic surface of this Pluggable Warmer sparkles as it emits a soft glow.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. Uses np7 warming bulb, which is included.