LED is an abbreviation of light emitting diode, the basic structure is a semiconductor which will emit light when the power is on. The semiconductor is sealed by epoxy. Lumen is the basic unit for the lighting, it is used to measure how much light the lighting source emitting per wattage. The energy efficiency of incandescent lamp s and high pressure sodium lamps could not reach 100LM/W. Besides, the lifespan of LED Sports Light could always reach 150,000 hours, far more than incandescent lamps and high pressure lamps. Another advantage of LED Sports Light is recycled. Unlike the other lamps, LED Sports Light will not emit toxic, such as mercury, lead, it is totally environment friendly.