TRI-LED Lights by MVP Disc Sports are improved and better than ever. These familiar micro LED units are designed to be taped to the center of a disc for night play and can be used in a variety of creative ways. A button located between the three lights under the printed MVP logo circuit cover switches power on/off. This Multicolor model auto-cycles beautifully through a range of vibrant colors and flash modes using blends of its three LED lights.