The Cronus G2 UHD Dual Focus spotting scope from Athlon provides both clear and colorful images. Dual layers of ED glass work together to remove chromatic aberrations, while a dual focusing system allows you to focus quickly. The Apochromatic Lens System helps converge refracting colors into one focus point to improve contrast. Additionally, the XPL Protective Coating shields the exterior lens from dirt, oil, and scratches. Cronus G2 UHD Dual Focus Features: ED, UHD glass XPL Protective Coating Apochromatic Lens System Athlon Scopes Athlon Cronus G2 20-60x86mm Dual Focus Angled Spotting Scope 311006