Eyepiece LVW-3.5mm Rare-Earth Lanthanum Glass Magnification; 2000mm=571X 1000mm=285X 500mm=143XDesign; 8 Elements in 5 Groups; 20mm Eye-Relief; 65deg. Apparent Field of View ; 1.25Lbs , Boxed 5.5 x 2.5 x 2.5 inches
