ChiChinLighting LED Mr16 Bulbs 5W 12v Cool White Spot Light 50W Halogen Replacement This is a LED mr16 bulb that works on AC/DC 12V, please do not wire it directly to AC 110v! LED mr16 bulb specially designed by ChiChinLighting in order to work most of the halogen/electrical transformers in the market ChiChinLighting strongly recommends using ChiChinLighting-developed led mr16 specialized external driver to guarantee reliability and lifespan This model is in Cool White which is very rare color, comes with 1 PIECE Perfect LED spot light bulb and flood lighting