The bulb's most impressive spec is that it only consumes 16 watts of electricity, efficient enough to put out 100 lumens per watt. That ties it with Utilitech's bulb, making the two of them the most efficient 100W replacements we tested. Nothing else was able to get above 90 lumens per watt.
GE backs its longevity claims up with a 10-year warranty, the same warranty that Cree offers for its bulbs. That's as long a warranty as you'll find on a brand-name light bulb, and an exceptional deal for skeptics who aren't sold on LED value just yet.