The 100W replacement, for example, achieves a highly creditable 100 lm/W – delivering 1,650 lm from 16.5W. What makes this remarkable this is the 2,700K (warm) white version, with a CRI of 85, and the bulb is dimmable – dimmability can cost up to 2W of consumption. The naturally more efficient 5,000K (cool white) version creates 1,700 lm from 15W – 113 lm/W. This is one of a portfolio of 25 new incandescent replacements aimed at delivering “on the true promise of LED technology to make lighting better than it was before”, said Cree “Most are projected to last 22-plus years, and some up to 32 years.” Rated life of both bulbs above is 15,000 h, operating in environments between -25 and +45°C. Amongst bulbs, there are also 40, 60 and 75W versions. Sadly for potential UK buyers, the whole range is only available for 120Vac operation.