This Leupold VX-6 3-18x44mm scope with Illuminated Varmint Hunter reticle features side focus, a quantum optical system, xtended twilight lens system, DiamondCoat2, lead free lenses, generous eyebox, pop-up rezero adjustments, blackened lens edges, twin bias spring erector system, extreme fast-focus eyepiece, CDS custom dial system, and motion sensor technology.