Barska 18-90x88 Benchmark DFS Waterproof Straight Spotting Scope w/ Case Grip. Barska has engineered this Spotting Scopes with an innovative Dynamic Focusing System which allows you to focus by turning the objective lens which will make you appreciate this Barska Spotting Scope's stunning performance and ruggedness. Barska 18-90x88 Millimeter Benchmark DFS Spotting Scope Model: AD11334 Magnification: 18-90x Objective Lens: 88mm Prism Type: Porro Eyepiece System: Straight Optical Coating: Fully Field of View(ftat1000yds/mat1000m): 120.9/40.3at18x - 44.3/14.8at90x Close Focus(ft/m): 32.8/10 Exit Pupil(mm): 6.15at18x-1.2at90x Eye Relief(mm): 19at18x 13at90x Weight(lbs): 1.78 Length(inch): 13.2 Tripod: Pan-head Specifications for Barska 18-90x88 Benchmark DFS Waterproof Spotting Scope AD11334: Manufacturer: Barska Color: Green Magnification: 18 - 90 x Objective Lens Diameter: 88 mm Eye Relief: 9 - 13 mm Field of View Linear: 120.9 - 44.3 ft at 1000 yds Twilight Factor: 39.79 - 88.99 ED Glass: No Scope Body Type: Straight Body Only: No Close Focus: 32.8 ft Length: 13.2 in Weight: 1.78 lb Included Accessories: Accu-Grip Handlheld Tripod Hard/Soft Carrying Cases Lens Cloth Tripod Magnification Type: Variable Features of Barska 18-90x88 Benchmark DFS Waterproof Spotting Scope AD11334 Prism Type Porro Prism Glass BK-7 Magnification (Zoom) 18x-90x Eye Piece System Straight Close Focus (ft/m) 32.8/10 Eye Relief 9mmat18x 13mmat90x Objective Lens 88mm Exit Pupil 6.15mmat18x-1.2mmat90x Field of View (ftat1000yds/mat1000m) 120.9/40.3at18x-44.3/14.8at90x Optical Coating Fully Coated Waterproof Yes Fogproof Yes (Nitrogen CO2) Tripod Adaptable Yes Product Weight 1.78 lbs Length 13.2 inch Finish Green Package Contents Barska 18-90x88 Benchmark DFS Waterproof Spotting Scope AD11334 Compact panhead tripod ACCU Grip handheld mount Protective case Barska 18-90x88 Benchmark DFS Waterproof Straight Spotting Scope w/ Case Grip AD11334