Twilight Supernova is a regulation golf ball that contains a bright LED that illuminates upon each impact for 8 minutes and retains a continous glow afterwards with our patented after-glow technology. The proprietary design is motion activated by either striking the ball with your club or dropping the ball from approximately 12 cm. You can follow the ball from the moment it leaves the club face to its final destination. The remaining layers are made from conventional materials. The final cover material is Surlyn which has been used by the golf industry for decades. Our high impact lighted technology has been incorportated into a golf ball.