Add to your Halloween haunted house set up with a string of these 100 orange lights. The lights are standard indoor/outdoor lights with a green cord, and are 21 feet total. The lights can be adjusted for steady burning or two-way flashing. There are 4 spare bulbs included. Add as many strings as you want, they plug in together to form a long string! It's a great accessory for your haunted house or Halloween decorations!