BITS LED bulbs are ideal replacements for traditional 60W, 75W and 100W incandescent bulbs and are designed for interior lighting applications such as table lamps, floor lamps, ceiling fixtures and sconces. LED bulbs are up to 80% more efficient than incandescent or halogen bulbs and last up to 15,000 hours (almost 2 years!) in normal use. Light output is spread approximately 230° from the bulb for even, uniform distribution.