Extra-Low Dispersion glass significantly reduces chromatic aberration giving you an utmost bright and sharp image with true color The illuminated reticle provides greater visibility during dusk and dawn and other low ambient light environment First focal plane reticle stays valid at all power settings allowing you to fully utilize the specially designed reticle that shrinks or grows along with your target as you zoom in or out Reticle etched on the glass that provides excellent backing support for complex reticle design and offers great durability