Rokinon SP 9-27 x 50mm Spotting Scope Magnification: 9x to 27x; Objective lens diameter: 50mm Field of view (feet/1,000 yards): 210 feet to 105 feet; Field of view (angle): 4 degrees to 2 degrees Exit pupil: 5.5 mm to 1.9 mm; Eye relief: 16 mm to 12 mm Brightness: 3.1 to 3.4; Materials: Aluminum/Glass/Rubber Length: 8.07 inches; Available in green color option