Monoculars

  • 8x25 10x25
  • 8x25 10x25
  • 8x25 10x25
  • 8x25 10x25
8x25 10x258x25 10x258x25 10x258x25 10x25

8x25 10x25

  • Model:BT4450
  • Magnification: 8 x
  • Objective Lens: 25mm
  • Angle of View: 7.2 °
  • Product description: The optical system features bright and clear fully multi-coated optical lenses and BK7 roof prisms.
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Key Features:
● BK7  Porro Prisms
● Fully Multi-Coated Optics
● Apparent Angle of View: 58°
● Close Focus Distance: 0.5m
● Slip-Resistant Armoring
● Fold-Down Rubber Eyecup
● Carrying Case & Wrist Strap
Overview :
8x25  Monocular is a compact, versatile optic that can easily fit in your pocket or purse, and is a great companion anywhere you go. The optical system features bright and clear fully multi-coated optical lenses and BK7 roof prisms. In addition to observing faraway objects, 0.5m minimum focusing distance will allow you to observe more details when watching plants, animals, or birds at a short range.  The focusing is especially easy with an oversized knurled center focusing wheel.The food grade silicone material housing is durable ergonomic. 
Optical Performance
● BK7 Porro prisms
● Fully multi-coated Lenses
● 25mm objective lenses perform well even in low light
● Apparent angle of view: 54°
● Close focus: 0.5m
Use and Handling :
● Close focus distance: 0.5m
● Prominent zoom ring knob
● Fold-Down rubber eyecups for easy use with or without eyewear
● 13 mm eye relief
● 3.1 mm exit pupil
Construction Details :
● Compact design is pocketable and offers easy one-handed use.
● Soft pouch included for convenience
● Diamond-textured palm pads provide additional slip-resistance while adding an elegant and sleek look
● Lightweight design, weighs just over 158 g
● Includes case and neck strap
Performance :

Model BT4450 BT4450
Specification 8x25mm 10x25mm
Magnification 8 x 10 x
Objective Lens 25 mm 25 mm
Angle of View 7.2 ° 6.5 °
Field of View @ 1000m 126m / 1000 m 114m @ 1000 m
Field of View @ 1000yds 378 ft /1000 yds 342 ft @1000 yds
Close Focus Distance 0.5 m 0.5 m
Exit Pupil 3.1  mm 2.5  mm
Eye Relief 13.0 mm 13.0 mm
Diopter Adjustment Yes / ±4 Yes / ±4
Focus system Objective Lens Objective Lens
Prism Type  Porro (BK-7)  Porro (BK-7)
Lens Coating Fully Multi Fully Multi
Eyecups Fold-Down Fold-Down
Waterproof No No
Weight 158 g 158 g
Size 110x65x50 mm 110x65x50 mm

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