At a glance:- Site hole on the side of the spotting scope body is useful to quickly bring your target into the field of view while birding- Extra Low dispersion glass (ED) objective lens depresses chromatic aberration and increases image quality and contrast- The dual focus system consist of a coarse focus adjustment and a fine focus adjustment.The Geoma II ED 82S Straight through spotting scope gives you all the features of the non ED product and adds the highest quality extra low dispersion glass generally found only on spotting scopes three times the price. Read the review in Living Bird Magazine where the Geoma scopes were rated top in their group. The ED glass produces high-contrast images with no false color with PFM (Perfect Full Multicoating) on all surfaces of the lens and prisms.The combination of all of the Vixen Geoma features and the best optical glass makes this field scope the very best money can buy. Nitrogen filled and sealed body for a complete waterproof product usable in all weather. All air-to-glass surfaces of lenses and prisms are fully multi-coated to deliver crystal clear views.The spotting scope comes with a tripod adapter block with rotation mechanism for different viewing angles or photography. Lightweight and durable body is made of a fiber glass material. Dual focus with second micro-movement fine focus (1:8) Sliding Lens Shade helps prevent stray light from falling on the lens and improves contrast. Comes complete with Vixen's long eye-relief GLH-48 zoom eyepiece with twist-up eyecup. All Vixen Geoma Spotting Scopes have a Lifetime Warranty.Specifications:- Objective Lens Diameter: 82 mm- Focal Length: 480- Magnification: 21x to 63x- FOV at 1000m: 31.4m to 14m- Near Focus: 17m- Coating: Perfect Full Multi-Coating, Waterproof- Weight: 900 gIn the Box:- Vixen Geoma ED 82-S Spotting ScopeModel: VX18073- Carry Case- Vixen GLH20D Zoom Eyepiece