These colour-changing LEDs take the work out of creating crazy, flashy, blinky... ness. Simply apply power and the LED will cycle through the RGB colourspace: no external controller necessary! These bright and festive LEDs make great decorations, LED "throwies", indicator lights, etc. Typical forward voltage is 2V.
These 3mm LEDs are of the "fast-changing" variety, meaning they fade-cycle very quickly through several colours and then flash-cycle through several more colours before starting all over again.