Colorite has the warm, traditional glow of incandescent lights with the benefits of energy-saving LEDs. If fact, you can save up to 80% on energy costs by switching to LED lighting. Constant On technology means entire string continues to operate even if one bulb loosen or get damaged. Connect up to 25 sets (sold separately) end-to-end for added string length. 16.33 ft. lighted length. 5-year manufacturer’s limited guarantee. For indoor and outdoor use.