The shell is made of high-strength engineering platic PA+GF, the lampshade adopts injection of PC, lens hood adopts good quality mould pressing of stainless steel. The navigation lights has whole sealing structure, it has water-proof function under the condition of bad environment. The navigation lights use exclusive LED illuminant. LED lamps have a lifespan and electrical efficiency which are several times greater than incandescent lamps, and are significantly more efficient than most fluorescent lamps. The navigation lights can regular work under the temperature of -30℃~55℃.