Switch and save hundreds switching a single b15 30 40w halogen bulb to this lumilife led 5w equivalent will save you approximately 11250 over the bulbs lifespan this is thanks to a dramatic reduction in energy use without sacrificing brightness or light quality it also boasts up to 400 lumens of light and has a warm white 2700 kelvin colour temperature extra long lifespan leds last up to 20 times longer than traditional lighting sources with lifespans that reach up to 25 000 hours whi