HDX optics extra-low dispersion glass (ED) combined with high transmittance glass (HT); Light transmission and optical clarity for any situation; 6x Super-Zoom Advanced Optical System; Fast Focus Eyepiece; Night Vision (NV) Illuminated reticle settings with locking illumination dial; Laser engraved mounting line to align riflescope to scope rings; Dependable waterproof (IPX-8 rated for complete and continuous immersion at 20 meters) and fog-proof performance; Power selector ring throw lever included with all models; Covered by Sig Sauer's Infinite Guarantee and Electronics Limited Warranty, see website for full details; Assembled in SIG SAUER optics factory in Wilsonville, Oregon, USA