The Geoma II ED Series Spoting Scopes give 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. The ED glass produces high-contrast images with no false color. The combination of all of the Vixen Geoma features and the best optical glass makes this series 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. Weight: 2 lbs; Objective Lens: 67mm (2.6 in)