Vortex Optics Crossfire HD Spotting Scopes

From the Amazon Listing

• If you don’t want to compromise performance for value, the Crossfire HD family of spotters deliver the powerful, tine-counting tool you’ve been waiting for. The Arca-Swiss compatible foot means out-of-the-box, mount-and-go convenience on most tripods.
• HD optical system is optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration, and provide outstanding color fidelity, edge-to-edge sharpness, and light transmission.
• Anti-reflective coatings on all air-to-glass surfaces provide increased light transmission for greater clarity and low-light performance. The wide field of view is perfect for chewing up ground and assists in quicker target acquisition.
• The helical focus allows for fast and fine adjustments. Adjustable eyecups twist up and down for comfortable viewing with or without eyeglasses. A built-in sunshade on the 65mm & 80mm models reduces glare and shields the objective lens from rain and snow.
• The shockproof, Crossfire HD has rubber armor that enhances both durability and grip for the user. Nitrogen purged, these spotters deliver waterproof and fogproof performance.
• Backed by our unlimited, unconditional, lifetime, VIP Warranty. A fully transferable promise to repair or replace your item if it becomes damaged/defective. Does not cover loss, theft, deliberate damage or cosmetic damage that doesn't hinder performance.