Robust against vibrations yet still beautifully styled this long lasting and very energy efficient 7.8 Watt (53W equivalent) Osram PARATHOM MR16 lamp is an excellent replacement for an existing halogen GU5.3 downlighter. Particularly suited to display and directional lighting applications in museums retail outlets halls and stairways and hospitality environments it emits a Very Warm White colour temperature and lasts an impressive 40000 hours. In addition this LED GU10 is fully dimmable contains no mercury and emits no UV radiation in the light beam.