The ultra-slim Brim spot head light from Tech Lighting features field-changeable optics and an optional decorative glass collar. The latest advances in technology deliver an extremely powerful LED head without the bulk typically needed to conceal a driver and manage thermal performance. Includes field replaceable 7 watt, 855 delivered lumen, 2700K or 3000K LED module. Integrated lens holder accommodates up to two lenses or louvers (sold separately). As a general rule when using the Burk head, Tech Lighting do not recommend using greater than 33% of the maximum wattage specified for the low voltage transformer due to inrush current requirements. For assistance in calculations, please contact Tech Lighting Technical Support Department Dimmable with low-voltage electronic or magnetic dimmer (based on the transformer). As a general rule when using the Burk head, Tech Lighting do not recommend using greater than 33% of the maximum wattage specified for the low voltage transformer due to inrush current requirements. For assistance in calculations, please contact Tech Lighting Technical Support Department