Get great energy savings without the drawbacks of a compact fluorescent. Titan's LED bulbs switch on instantly without a warming up period, and have no toxic mercury. A cool to the touch 7 LED array is equivalent to a 15 watt incandescent and lasts for up to 35,000 hours.The LED bulbs fit in standard light sockets and last for years with normal use. Great for hard to reach places, you won't experience the aggravation of constantly replacing bulbs. So switch out those energy guzzling incandescent bulbs and get a four pack of efficient Titan LEDs.