This 60W-equivalent lamp combines a halogen incandescent with a compact fluorescent lamp, eliminating that annoying lag in full brightness typical of many CFLs. As the CFL warms up and comes to full brightness, the halogen capsule inside goes out so the bulb performs mostly as a very efficient CFL. It draws 15W and produces light of 2500K, just as warm as a standard incandescent. GE says the bulb should last 8,000 hours, or more than seven years at three hours per day. The lamp is Energy Star-qualified and was named a 2012 Good Housekeeping Very Innovative Product. ge.com