The Perfect LED Spot solution Philips LED MR-16 lamps with single optic technology provide the look and color quality of traditional halogens while using a fraction of the energy. A perfect fit for spot lighting, they are compatible with most existing fixtures with MR16 GU5.3 holders and are designed as a retrofit replacement for halogen or incandescent spots. Up to 80% energy saving compared with halogen lamps and lower maintenance costs;Easy to replace/retro-fit. Broad compatibility with transformers;Perfect fit in most current Halogen fixtures