ED Prime GlassED Prime Extra-Low Dispersion fluorite glass delivers amazing color resolution and contrast, and virtually eliminates chromatic aberration and color-fringing to bring out the most distinct details possible in low-light conditions.
PC-3® Phase CoatingA chemical coating applied to the prisms to enhance resolution and contrast for the brightest and clearest images possible.
RainGuard HDThis patented, permanent, water-repellent coating causes moisture from rain, snow, sleet and condensation to bead up and scatter less light, so you get a clear, bright view when other optics would be rendered useless
Waterproof/FogproofProducts are O-ring sealed and nitrogen purged for total waterproof and fogproof protection. These models can withstand complete immersion in water and stay dry inside. The interior optical surfaces won’t fog due to rapid temperature change or humidity.
ZoomVariable power, or zoom, enables the user to zoom in on an object or zoom out to a wider view through the use of a dial, lever, or setting.