The Crossfire HD family of spotters delivers the powerful, hunting tool you've been waiting for with the proven performance and reliability you expect from a Crossfire. Its wide field of view is perfect for chewing up ground in any environment.Specifications and Features: Magnification: 12-36x Objective Lens Diameter: 50 mm Linear Field of View: 173' - 89' Angular Field of View: 3.3deg - 1.7deg Eye Relief: 18.0mm Length: 9.7" Weight: 31.2 oz. Close Focus: 14.5'