Incredibly efficient lighting the saving potential of switching a single halogen or incandescent bulb to led is huge by switching over to this 5w e27 led from a 30 40w halogen youll see savings of approximately up to 120 as it consumes 90 less energy designed to last over a decade with a 25 000 hour lifespan the lumilife 5w e27 will give you 15 years of service based on average use thats 20 times longer than halogen equivalents tailored lighting choose from cool white and warm white