"Characteristics: 1.Use 3W high quality LED lighting source, the lifespan is over 50000 hours. 2.These Herifi LED grow lights use only about half the electricity as HPS lights, and produce much more yield per watt. 3.Utilizes a thick, heavy duty 6063 aluminum heat sinks that dissipate heat much more effectively than other LED lights, making Herifi LED grow lights run more smoothly and keeping the ...