| Lighting Science Group Launches Expanded Line of Ultra-Efficient DEFINITY LED Bulbs
 
 First Low-Cost, High Output A19 60 and 40 Watt Equivalent Omnidirectional Bulbs
 and BR30/40 Bulbs Added to the Line
 
 SATELLITE BEACH, Fla., May 16, 2011 /PRNewswire via COMTEX/ -- Leading the
 ultra-efficient lighting revolution--Lighting Science Group (LSCG) will roll out
 at LIGHTFAIR International an expanded line of low-cost, long-lasting DEFINITY
 LED bulbs. The line now includes LED flood and spot lights as well as vanity
 lights and 60 and 40 watt equivalent omnidirectional bulbs in variety of colors.
 
 The DEFINITY LED bulbs are approximately 75-80% more efficient than traditional
 bulbs, are dimmable, are "instant on", and will last for decades. Independent
 tests show that the lumen (light) output of the bulbs is unrivaled-outperforming
 many comparable products by 25-30%.
 
 "The DEFINITY LED line is simply brilliant--quality and energy savings at an
 affordable price," said James Haworth, chief executive officer of Lighting
 Science Group. "They are the clear winners for those shopping for ultra-efficient
 and environmentally-friendly replacement bulbs."
 
 The new 60 watt equivalent DEFINITY LED bulb is a direct replacement for the most
 commonly used incandescent bulb in use in this country; over 425 million 60 watt
 incandescent bulbs are sold in the U.S. every year--making up approximately 40%
 of the bulb sales market. Furthermore, unlike compact fluorescent lamps (CFLs),
 Lighting Science Group's LED bulbs contain no mercury, are completely recyclable
 and offer outstanding light quality.
 
 Many of the DEFINITY LED bulbs have been ENERGY STAR approved. "We lead the
 industry in the number of ENERGY STAR approved LED bulbs--a true testament of the
 superior quality and performance of our LED products," added Haworth.
 
 For more information about Lighting Science Group's LED lighting solutions, visit
 lsgc.com or drop by booth # 3301 at LIGHTFAIR International in
 Philadelphia, May 17-19, 2011.
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