Fits only our Coyote Cannon light. Will not work in any other lights Your choice of color(Red,Green,White,InfraRed) The color of LED module determines the color of light the Coyote Cannon light will emit Choose your color above in the options Red shines 1025 yards Green shines 1770 yards White shines 1650 yards IR 850nm: ID at over 1000 yards with Digital Night Vision and over 2500 yards with Gen 3 NV. IR 940nm: ID at over 700 yards with Digital Night Vision and over 1800 yards with Gen 3 NV.