21 layer fully multi-coated optics 6x ratio optical system. Fixed parallax distance of 100 yards. 30mm mono-tube chassis for superior strength. Long eye relief for high recoil and magnum calibers. Glass etched reticle with red illumination. 6 levels of brightness with off positions in-between. 1/10 MRAD exposed and locking, zero-stop turrets. Zoom ring with thumb lever and locking ocular.