Features "Dual Illumination" - Fiber optics and Tritium. No
Automatically adjusts reticle illumination to the present light
Using a tritium coated, fiber optic reticle, Trijicon scopes automatically
provide the correct level of brightness in any lighting situation. Incredible !
Trijicon scopes are widely used by the US military and that proven technology
has been incorporated into it's Accupoint hunting scopes.