Novelty Lights NL SELECT Multi Color Diamond Faceted C9 Retrofit Bulbs utilize bright SMD LED's creating vivid and festive light displays. NL SELECT C9 Retrofit bulbs utilize an ultra durable polystyrene plastic shell providing resistance to chips, fading and cracking. All of our LED C9's are energy efficient using only 0.65 Watts and 0.005 Amps with built in dimming capability, perfect for animated displays. Built to last with a 2 season warranty or 1 year permanent use, our NL SELECT C9 Diamond Faceted LED bulbs will provide years of quality use. Perfect for seasoned Christmas light installers, yet easy for anyone to decorate roof lines, trees, buildings, walkways and porches. Our NL SELECT C9 Diamond Faceted LED bulbs can be used with our C9 stringers (100', 25', 12.5' & 10'), as well as our commercial grade C9 Bulk Spools and our Vintage Twisted Wire Strings with E17 Bakelite Sockets. Not recommended for use with Heavy Duty Patio Light Strings.