4 Lighting sources: White LED, Green LED, IR-IFF LED and Blue LED Double click of button initiates high intensity strobe of selected light source O-Ring and gasket sealed openings for waterproof operation Meets MIL-STD-801F Method 512.4 Push-Button Switch Enables/Disables Selected Lighting Source Starting At Low Intensity And Progressing To The Brightest Intensity High Impact Super-Tough Nylon Case Offers Exceptional Durability And Weather Resistance