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Eyeskey Eaglet 10X42 Binoculars


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● Eco-Friendly Lead-Free Glass
● Compact BAK4 Roof Prisms
● Anti-Reflection Fully Multi-coated
● Nitrogen filled and O-ring sealed


The 10x42 Eaglet Roof Prism Binocular from Eyeskey combines fully multi-coated optics, which deliver bright and clear images, with a durable and comfortable-to-hold body. With a 10x magnification and 42mm objectives, you obtain higher-than-average magnification and a light-gathering capacity that delivers bright images. You can easily spot your targets with a wide 5.6° angular field of view and enhanced depth of field and quickly bring them into focus with a center wheel. In addition to observing distant scenes, birds, and game, the minimum focus of 4m allows you to study in detail close targets like animal footprints, marks, or landscape features without moving away from your subject. The binocular also features a 4.2mm exit pupil, an 18.4mm eye relief, and a 56-74mm interpupillary adjustment range.

To offer durability and comfort, the 10x42 Eaglet has a smooth rubber armor covering that provides external protection and a secure non-slip grip. The housing is O-ring sealed waterproof and nitrogen-purged fog-proof, which shields the binocular from a variety of weather conditions and effects of a rapidly changing temperature. To ensure a non-slip grip while focusing even while wearing gloves or in bad weather, the center focus knob is wide and knurled. The binocular is mountable on a tripod with an optional adapter and has twist-up eyecups. Also included are a rainguard, tethered lens covers, a neck strap, and a soft carry case.

Optical Performance

  • Powerful 10x magnification allows for detailed observation of distant subjects
  • Larger 42mm objective lenses improve the light-gathering ability for enhanced low-light performance such as at dawn and dusk or when peering into the dense brush
  • BAK4 prism glass delivers a round exit pupil and a crisp and clear image with limited edge distortion
  • Compact roof prism light path ensures the optical tubes remain slim for easier handling without affecting performance
  • Broadband anti-reflection fully multi-coated optics maximize light transmission and improve contrast and color fidelity across the entire visible spectrum
  • 293ft field of view at 1000 yards

Use and Handling

  • Closed-bridge configuration provides a stable and strong platform for the internal focusing mechanism
  • Large slip-resistant center focusing wheel is easy to manipulate in cold and wet weather, even while wearing gloves
  • The right-eye dioptric correction allows users to compensate for an optical prescription to produce sharper views
  • Twist-up click-stop eyecups for easy use with or without eyewear
  • Tripod mountable with an optional adapter for hands-free use
  • 14mm eye relief makes viewing easier with reduced eye strain, especially during long-duration glassing sessions
  • 4mm exit pupil will completely cover pupils as they open and fully dilate in low light to keep the whole scene in view without vignetting

Construction Details

  • Nitrogen filled and O-ring sealed to be waterproof and resistant to internal fogging when moving through extreme changes in temperature and environmental conditions
  • Ergonomic body design positions the hand over the binocular's center of balance for additional comfort and reduced strain and fatigue
  • Protective black armoring provides a slip-resistant grip, especially in cold and wet conditions
  • Plug-in fold-down objective lens caps prevent losing them during observation sessions
  • Weight: 20.84 ounces

Prism Type Roof (BAK4)
Number of Lenses 6 Pieces 4 Groups
Objective Lens Type HD Glass
Prism Coating Aluminum Coated
Lens Coating Fully Multi-coatings
Eyecup Type Twist-up/down
Chassis Material PPS
Weight 20.84 oz / 591 g
Magnification 10 X
Objective Lens Diameter 42 mm
Eyepiece Lens Diameter 17 mm
Angle of View 5.6° (Actual)
Field of View 293' @ 1000 yd / 98 m @ 1000 m
Minimum Focus Distance 13.12' / 4 m
Relative Brightness 16.81
Twilight Index 20.49
Exit Pupil Diameter 4.1 mm
Eye Relief 14 mm
Diopter Adjustment Yes, Right Eye, ±3
Focus Type Center
Interpupillary Distance 56~74 mm
Fogproof Yes, Nitrogen Filled
Waterproof/b> Yes, O-ring Sealed
Packaging Info
Package Weight 2.0 lb
Box Dimensions (LxWxH) 7.283 x 6.299 x 2.953"

Customer Reviews

Based on 53 reviews
Better than expected!
Thank you so much for your purchase and feedback, I'm glad to know that you are happy with our product. If any questions, please be free to contact us. :)
So much better than the super cheap ones, there is no comparison
Great Success
Good product to have on hunting trip
Perfect for beginers
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Eyeskey Eaglet 10X42 Binoculars