The Fenix AD301R Flashlight Red Tactical Filter Features: - For the LD10, LD12, LD20, LD22, PD20, PD22, and PD30. - Produces a smooth beam of red light that will not degrade night vision as white light would. - Hunters often use the red filter to avoid spooking game during pre-dawn hours as deer see poorly in the red color spectrum. - Also useful for close range non-tactical applications such as map reading as it reduces the intensity of light output. - Made from heat resistant coated glass with anti roll design.