Konus 7166 Armada Rifle Scope Black 6-24x56mm Dual Illuminated Red/Blue Engraved Fine Crosshair ReticleWhile the average parallax wheel will simply provide an estimation about a given distance (200 m yds will be anything between 190 m yds and 210 m yds) the exclusive system of the Armada models is spot on and flawless with every single measurement instead (200 m yds will be 200 m yds, with the same precision of a laser rangefinder). The scope features locking tactical turrets; fast focus ocular; parallax wheel for accurate measurements; ant1 canting