The ROMEO4XT-PRO offers the same high-end optical performance, Quad Reticle, and legendary durability of the original ROMEO4T while adding key features requested by professionals. Illumination control moves to the top, providing easy access with either hand while staying clear of chest rigs and plate carriers when slung. A dedicated night vision override switch makes short work of drastic changes in lighting conditions, and by combining MOTAC with a common AAA battery, the ROMEO4XT-PRO is rated for 50,000 hours of runtime. Like its predecessor, the ROMEO4XT-PRO is IPX8-rated for waterproof and fogproof performance and is tested to MIL-STD-810 to ensure reliable service. More on Quad Reticle technology Quad Reticle technology allows you to toggle between 4 different selectable reticle options. With the Ballistic Circle Dot reticle, you can pick between a 2 MOA dot, a 2 MOA dot with ballistic holds, a 2 MOA/65 MOA Circle Dot or a 2 MOA/65 MOA Circle Dot with ballistic holds. These ballistic holdover points subtend for the 5.56 NATO and 7.62 NATO cartridges. Quad Reticle: choose between a 2 MOA dot, 2 MOA dot with holds, 2 MOA dot/65 MOA circle, or 2 MOA dot/65 MOA circle with holds Ballistic holdovers subtend with 5.56 & 7.62 cartridges SpectraCoat highly efficient, ultra-wide broadband, anti-reflection lens coatings reduce surface reflections D.A.R.C. (Dark Adaptive Reticles & Coatings) specialized lens coatings and reticle brightness settings that are optimized for use with GEN 3+ night vision devices 12 illumination settings (9 daylight/3 NV) Dedicated night vision override switch for drastic changes in lighting MOTAC motion activation Aircraft-grade aluminum housing IPX8 rated for waterproof, fogproof performance 50,000 hrs. runtime on (1) AAA battery Half-inch hex mount Backed by the Infinite Guarantee: SIG SAUER electro-optics are guaranteed forever Order today!