With modern energy efficient lighting technology, Candex C7 LED specialty colored light bulb are a great option for signs, string lights, and other specialty uses. This C7 LED bulb is a solid blue finish. It uses only 1-watt of energy providing the same brightness of 10-watt blue C7 incandescent. Low heat, mercury free, and RoHS compliant. This non-dimmable C7 LED bulb is shatterproof and can screw into standard medium base sockets. These are available as two bulbs per blister pack.