... lifetime.7.Effective Range in pure darkness: 500m-1000m8.Reflector Cup: Coated with all aluminum alloy of cedrat, dissipating heat quickly, ... 11. Inside use High Accuracy Tacical Waterproof O-ring12.Weaver Mount: Tube diameter is 1 inch(25.4mm), Rail system ... manufacturer LOGO or Customer LOGO with Laser marking machine for free fee15.Accessories: LED flashlight, Weaver Mount, wrench, Mouse rail switch, ...