... cover:stainless steel 3.constant current driving 4,CE&RoHS certification 3W Square LED Underground ... Advantage:1.Using LED as light source, various color: red, yellow, green, blue, white and ... has good function of waterproof and dustproof.4.Low energy consumption and low maintenance costs5 ... consumption and durability, they widely used to light for building, amusement park, bill board, screen, street ...