Porro prism center focus-10x. Measures 3.26" x 4.33". Uni-body design enhances durability by locking objective lens in a single housing and synchronizing the eyepiece movement. Aspherical lens elements assure the items on the edge of your field of view are just as sharp as those in the center. Focusing range: 9.24 ft-infinity. Objective Lens Diameter: 21mm. Real Field of View: 5.0 degrees. Field of View at 1000m: 87m. Exit Pupil: 2.1mm. Eye Relief: 9.5mm. Relative Brightness: 4.4. Sliding eyepiece ring. Black leather carrying case. Color: Black.
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