C7 120V Slow Color Change LED Replacement Lamp, Package of 25 Multicolor C7 color change LED bulbs, E12 base. 0.96 watt energy efficient bulbs reduce power needs by up to 90%. Nickel plated bases prevent corrosion and improve connectivity, saving you time and money. Acrylic resin bulbs are virtually unbreakable, and colors never fade, chip or crack.