1.E27 sprial tie-in,power saving. 2.LED lamp-house,various colors compounding-form out a single color,or double colors,or seven colors,with various functions such as gradual color-changing,jumpy color-changing,color flashing&color scanning,etc. 3.Extensively applied in lighting of AD decoration,rainbow gate,building outline,home decoration etc. 4.Simple mounting,light changing controller is unnecessary