monocular telescope low light night vision hd high power portable compact pocket concert outdoor telescope wholesale

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Product model: 7-21*21        Magnification ratio: 7x-21X
Objective lens diameter: 21mm          Eyepiece diameter: 13.2mm

Ocular lens group: 3 groups, 4 lenses Objective lens group: 1 group, 2 lenses

Prism: Roof Ridge/BK7          Coating: FMC Broadband Coating

Optical System: Pure optical system    Angle of View: 4.8°-2.3°

Line of sight field: 80-40 m at 1000 m / 252-120 ft at 1000 yards

Pupillary distance: 1.2–2.5 mm Pupillary diameter: 3–1 mm

Closest distance: 2.5 mm  Water resistance: NO

Weight: 80g                Dimensions: 35*40*105mm