G4/GY6.35 6 SMT RGB Color Changing LED Light Bulb Low Voltage AC/DC 12V. G4 will cycle through colors red, green and blue and combination of all 3 by itself. 140 Lumen output. Cycle time approximate 7 seconds, each color 2 seconds. This LED measures from top to bottom 1.62in, with a width of .39in and a diameter of 1.17in.