Halogen bulbs, a type of incandescent ... The new Cree 60-watt equivalent, $13, instantly provided a bright, warm light in our initial tests. We'll add it to the Ratings when testing is done.

Those with 2700 K are closest to incandescent bulbs; ones with 3000 K are similar to halogen bulbs. Efficiency is the comparison of the amount of light (lumens) produced by a given amount of ...

Thinking about using a 100W LED bulb in a 60W socket? Learn if it's safe, what the wattage ratings mean, and how to avoid ...