UTG 30mm 36-color Crossbow Scope, 275-385 fps Compensation 30mm Tube for Maximum Light Transmission, Built on True Strength Platform, Completely Sealed and Nitrogen Filled, Shockproof, Fog proof and Rainproof Tool-free Index Ring to Adjust Point-of-Impact Compensation per 275 - 385 fps for Optimal Aiming and Shooting Performance Premium Zero Lockable and Zero Resettable Target Turrets with Most Consistent and Precise 1/2 MOA per Click Adjustment, Parallax Preset at 35 Yards Patented EZ-TAP Illumination Enhancing (IE) System with Red/Green Dual-Color Mode and 36-Color Mode to Accommodate All Weather/Light Conditions Complete with TactEdge Integral Sunshade, UTG Max Strength Picatinny/Weaver Rings and High Quality Flip-open Lens Caps