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Eyeskey Lightning-Mini 8X25 Binoculars


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● Compact Roof Prism Design
● Anti-Reflection Fully Multi-Coated Optics
● Dual-hinge Bridge Design
● Lightweight Aluminium Chassis
● Nitrogen Filled, Water and Fogproof

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Lightweight and compact with moderate magnification to ensure a spacious field of view, the Lightning-Mini 8X25 Binocular is an ideal companion for your daily glassing needs. An asymmetrical hinge design enables the binocular to be folded up much smaller than typical center-hinged optics, you could easily fit it in a day bag, hiking pack, camping kit, or glove box. 

It is equipped with multi-coated lenses and BAK4 roof prisms for a bright, clear image with a generous 324-foot field of view at 1,000 yards. It features twist-up eyecups to compensate for eyeglasses or sunglasses, and its watertight housing is nitrogen-filled so it won't fog up from temperature change. An anti-slip rubber coating makes this binocular easy to hold.

Optical Performance

  • 8x magnification
  • 25mm objective lenses
  • Compact roof prism light path
  • Anti-reflection multi-coated optics maximize light transmission to improve color rendition, contrast, and image brightness
  • High refractive index BAK4 prism glass produces a round exit pupil and a crisp and clear image with limited edge distortion
  • 8-element/6-group lens configuration
  • Wide 324ft field of view at 1000 yards

Use and Handling

  • Closed-bridge/dual-hinge configuration
  • Low-profile center focusing wheel maintains the overall compact and slim form-factor
  • Broad 46-72mm interpupillary distance adjustment range enables easy use by people with thin faces like children and young adults
  • Twist-up rubber eyecups for comfortable use with or without eyewear
  • Long 15mm eye relief helps to reduce eye strain and improves viewing comfort
  • Comfortable 3.1mm exit pupil

Construction Details

  • Dual-hinge bridge design allows optical tubes to fold under for ultra-compact storage
  • Nitrogen-filled and O-ring sealed to be waterproof and resistant to internal fogging
  • Ergonomically-placed indented finger rests improve grip stability
  • Rubber covered exterior provides a sure grip for all weather conditions
  • Lightweight: 9.17 ounces
Prism Type Roof (BAK4)
Number of Lenses 7 Pieces 5 Groups
Objective Lens Type HD Glass
Prism Coating 5S.F MgF2
Lens Coating 6S.F Multi-Coatings
Eyecup Type Twist-up/down
Chassis Material Aluminium Chassis
Weight 9.17 oz / 260 g
Magnification 8 X
Objective Lens Diameter 25 mm
Eyepiece Lens Diameter 14.5 mm
Angle of View 6.2° (Actual)
Field of View 324' @ 1000 yd / 108 m @ 1000 m
Minimum Focus Distance 4.92' / 1.5 m
Relative Brightness 9.6
Twilight Index 11.4
Exit Pupil Diameter 3.1 mm
Eye Relief 15.0 mm
Diopter Adjustment Yes, Right Eye, ±2
Focus Type Center
Interpupillary Distance 52~72 MM
Fogproof Yes, Nitrogen Filled
Waterproof/b> Yes, O-ring Sealed (1 m /5 min)
Packaging Info
Package Weight 0.8 lb
Box Dimensions (LxWxH) 5.630"x 2.834"x 3.937"
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