Made from aircraft aluminum. Features two internal O-ring seals to protect against harsh environmental conditions. Includes a magnifying optical lens plus two spare colored lenses one red (night vision) and one blue (tracking). Nichia¨ L.E.D. light, the brightest and whitest available. Push-button sealed switch. Shock resistant. Nylon belt holster with lens pouch. Nylon carrying strap. Slide-in battery cartridge. 3 AAA batteries included.