INJIE Guiying 8×42 ED Binoculars

I. Product Features

ED Extra-Low Dispersion Lenses:
ED (Extra-Low Dispersion) glass significantly reduces chromatic aberration caused by long focal lengths. Different wavelengths of visible light refract differently, which can prevent them from converging on the same plane, causing color fringing (especially red and blue) in long-range observations. ED lenses focus all wavelengths to the same point, producing sharp, vivid images with strong contrast and true-to-life color reproduction.

BAK4 Multi-Coated Prism:
BAK4 prisms have a higher refractive index than BK7 glass, increasing light transmission and improving clarity and brightness. Images remain distortion-free, with enhanced contrast and sharpness, even in low-light conditions.

IPX7 Nitrogen-Filled Waterproof:
Perfect for outdoor activities, rainy weather, or humid conditions. Nitrogen-filled waterproofing allows the binoculars to withstand submersion up to 1 meter for 30 minutes, ensuring worry-free use in all weather conditions.

Master Craftsmanship & Modern Design:
Lightweight yet highly durable, with anti-slip side grips for comfortable handling. Ergonomically designed for balanced use and long observation sessions, combining practicality and premium feel.

Applications:
Outdoor travel, wilderness exploration, sports events, concerts, power line inspection, forestry surveys, security & law enforcement, military patrol, industrial inspection, marine observation, archaeological research, railway route surveying, land and natural resources investigation, and more.

II. Specifications

• Magnification: 8×

• Objective Lens Diameter: 42mm

• Eyepiece Diameter: 24mm

• Prism Material: BAK4

• Optical Coating: FMC Multi-Coated

• Focus System: Central focus

• Eyepiece: 5E3G

• Objective Lens: 4E3G

• Exit Pupil Diameter: 5.25mm

• Eye Relief: 17mm

• Field of View Angle: 7°

• Field of View at 1000m: 122m / 366ft

• Close Focus Distance: 1.5m / 4.92ft

• Relative Brightness: 27.56

• Twilight Factor: 18.3

• Light Transmission: 82%

• Resolution: 4.2″

• Diopter Adjustment Range: ±4 D

• Interpupillary Distance: 56–76mm

• Prism Type: Roof

• Optical Glass: ED Lens

• Body Material: Plastic-Steel Hybrid

• Exterior Armor: PVC

• Eyecups: Twist-Up

• Waterproof Rating: IPX7

• Dimensions: 127 × 51 × 140mm

• Weight: 710g

Tripod Compatibility

Tripod adaptable (optional) – standard camera tripod interface supported.