The Verdict model features 3rd axis adjustability and come with the X-Frame base that is stronger and lighter. Level Head sight ring is far easier to adjust, far more secure; can be customized to fit into top of sight ring. Indicator needle is indexable for easy re-sighting should your set up change. Splined vertical drive gear increases durability by 80% and provides a quieter, more solid feel. High performance PhotoChromatic shell - 80% tougher, changes color faster. This sight has more range and adjustability than traditional hunting movable sights and the angled (45°) sight tape can be seen from side or back. Precision 1st, 2nd and 3rd axis adjustability. Works great with one-piece quivers. Quick, smooth and quiet adjustment. Includes 4" Dovetail base.