Target Corona Dartboard Lighting - 360º Light Ring. With the magnetic attachment, the Corona lighting system is the new and more convenient way of lighting your dartboard. The feet of the Corona are magnetic, allowing them to attach to the steel ring of the Dartboard. You can use the Corona with a Dartboard and surround, Dartboard Cabinet set or just a dartboard on its own. The Corona also works with any Dartboard bracket. Using 123 individual LED lights, the Corona lighting system illuminates your board and provides consistent light regardless of the ambient lighting in your room. The latest in LED technology also dramatically improves your vision of the board and with 360 degrees of light, the board is virtually shadowless!