... 1.IP67 2.CE&ROHS 3.with SD card controller 4.can achieve effects of full-color running ... modules that can be easily programmed via a controller to various modes of colour changing displays. ... for dotted borders around light boxes, channel lettering, video screens, and so on for eye catching effect ... IC board inside, can get various kinds of video effect via controller7. 40pcs per bunchAppearance, size ...