Turtle Safe LED light bulbs, medium base, 590nm lighting for wildlife protection. Leftover bulbs that were used in a lighting contract on Florida's gulf coast to keep new born sea turtles from approaching the property instead of going into the sea because they are attracted to the moon, the natural light when they are hatching. Also helps protects fire flies (lightening bugs) because this wavelength doesn't attract them to the light. Probably reduces the number of bugs flying/crawling around your outdoor lights. Have twelve total bulbs available and would consider selling as a group instead of individually. Equivalent bulbs sell for as much as $37.95 through Superior Lighting (https://www.superiorlighting.com/7-watt-amber-led-a19-turtle-friendly-light-bulb-fwc-wildlife-lighting-certified/?gclid=Cj0KCQjw1aOpBhCOARIsACXYv-eHZofvkEFDcmc7WTIhV55NOZMaobJxGz5wBhn0tZX0s8wPBrhjgNoaAttaEALw_wcB).