The Viper R/T tactical binocular combines award-winning optics and tactical features to create a tough, durable roof prism binocular-reliable in the worst conditions. XD (extra-low dispersion glass) objective lenses further enhance resolution and deliver the true-to-life color accuracy so essential for identifying targets. Law enforcement and hunters can range objects of known dimension with the R/T Ranging reticle, which features four silhouettes to serve as a secondary ranging aid. Vortex Viper 8x28 Tactical Binocular V828RT