The inherent features of LED decide it to be the best alternative to conventional light source, and provide a wide range of application. Small size: A LED is essentially a tiny chip, about 4.5mm, encapsulated in an epoxy resin enclosure, so it can be extremely small and light. Low power consumption: Generally a LED is designed to operated at 2-3.6v, 0.02-0.03A current, that mean, it needs no More than 0.1w to operate. Long life time: Operating at a desired rated voltage, current and environment, LEDs enjoys a long life of up to 100,000hours. High luminous efficiency and low heat emitting: Due to the special materials that used to make LEDs, during electrons transition, LEDs mainly emit electromagnetic energy in the infrared pat of the spectrum which can`t be seen but is felt as heat. That is to say, LEDs are of high luminous efficiency and low heat emitting. The best LED in the market now emits 150Lm/W, which is almost tenfold as efficient as an equivalent tungsten-filament light bulb. Environmental protection: LEDs are made from non-toxic material, unlike the fluorescent lights with mercury that will pose a pollution danger. LEDs can be recycled too. Unbreakable: The light-emitting device of a LED is completely embedded in an epoxy resin enclosure which is much more sturdy that the bulb and fluorescent tube; there are no loose and moving parts within the solid epoxy enclosure. This makes LEDs virtually indestructible.