The shell and cover,which featured shock-absorbent,damp-resistant,heat-resistant,UV-resistant and dust-proof,is made of high quality diess steel.The lisfespan of the ultra-light LED,accompanied with quality eletronic components can reach 50000 hours,and it is highly wanterproof.The circuit board is sealed on both the top and the bottom,and with double-layer protection consist of 12mm tempered glass and silica O-ring.The underwater light is installed in the water 1.5 meters below with a waterproof capability of IP65.This product is widely used in plaza,street,park,landscape spot,places of entertainment,pool,fountain,swimming pool and gardening etc.