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Eyeskey Seeker-Pro 8-24X42 Monocular


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● Compact BAK4 Roof Prisms
● Fully Multi-Coated Lenses
● 8-24X Zoom Magnifications
● Twist-up Eyecup
● Lightweight Polycarbonate Chassis


With a compact size and its zoom performance, the Seeker-Pro zoom monocular is the perfect choice for outdoor enthusiasts, curious urban explorers, birders, shooters, and hunters who need to move fast and glass on the go.

It is equipped with optical elements that deliver excellent performance. The BAK4 prism glass and fully multi-coated lenses minimize reflection and maximize light transmission for a bright, sharp image. A generous zoom range gives you the ability to scan wide portions of the terrain for subjects on low power with the ability to dial up the magnification to bring the subject in close for detailed observation.

It is designed to be highly portable and comfortable to use. Measuring under 6" long and weighing just over 12 ounces, it has a natural feel in the hand and won't cause excessive arm fatigue when used for long periods. A twist-up eyecup and an exceptionally long eye relief at all magnifications maximize comfort and reduce eyestrain while being easy to use with or without eyeglasses or sunglasses.

Optical Performance

  • Broad 8-24x zoom magnification range provides wide views at low magnification with the ability to make detailed observations of distant objects at high
  • 42mm objective lenses improve the light-gathering ability for bright and clear images
  • Roof prism light path ensures a slim form factor for easier handling
  • High-index BAK4 prisms deliver a round exit pupil and a crisp and clear image with limited edge distortion
  • Anti-reflection multi-coated optics improve light transmission, color rendition, and clarity
  • 236ft field of view at 1000 yards on 8x, 120ft on 24x

Use and Handling

  • Twist-up rubber eyecup for comfortable viewing with eyeglasses or sunglasses
  • Wide 4.1mm exit pupil on 8x is optimized for low-light use for maximum coverage of dilated pupils; 1.4mm on 30x
  • Compact and lightweight design

Construction Details

  • Nitrogen filled and O-ring sealed to be waterproof and resistant to internal fogging when moving through extreme temperature changes and environmental conditions
  • Lightweight and temperature-resistant polycarbonate chassis
  • Weight: 12.52 ounces
Prism Type Roof (BAK4)
Number of Lenses 8 Pieces 6 Groups
Objective Lens Type HD Glass
Prism Coating MgF2 Coated
Lens Coating Fully Multi-Coatings
Eyecup Type Twist-up/down
Chassis Material PPS
Weight 12.52 oz / 355 g
Magnification 8-24 X
Objective Lens Diameter 42 mm
Eyepiece Lens Diameter -
Angle of View 8X: 4.5° (Actual)

24X: 2.3° (Actual)
Field of View 8X: 236.8' @ 1000 yd / 78.9 m @ 1000 m

24X: 121.1' @ 1000 yd / 40.3 m @ 1000 m
Minimum Focus Distance 6.56' / 2 m
Relative Brightness 8X: 16.8

24X: 2
Twilight Index -
Exit Pupil Diameter 8X: 4.1 mm

24X: 1.4 mm
Eye Relief -
Focus Type Manually
Fogproof Yes, Nitrogen Filled
Waterproof/b> Yes, O-ring Sealed (1 m /30 min)
Packaging Info
Package Weight 0.86 lb
Box Dimensions (LxWxH) 8.661"x 4.921"x 4.724"
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Eyeskey Seeker-Pro 8-24X42 Monocular