Super HD Binoculars And A Keyholder

Features:
Magnification and Objective Lens Diameter:
Common configurations include 8×42, 10×50, and 20×50, where the first number indicates the magnification power and the second number indicates the diameter of the objective lens in millimeters.
Optical Coatings:
Multi-coated or fully multi-coated lenses for better light transmission and reduced glare.
Phase correction coatings on roof prisms to enhance contrast and resolution.
Prism Type:
BaK-4 or BK-7 glass prisms for better image quality and light transmission.
Roof prism or Porro prism designs.
Field of View:
Wide field of view for easier tracking of moving objects, typically measured in degrees or feet at 1000 yards/meters.
Waterproof and Fogproof:
O-ring seals and nitrogen or argon gas purging to prevent moisture, dust, and internal fogging.
Durable Construction:
Rubber armor for a secure, non-slip grip and shock resistance.
Lightweight and robust materials such as polycarbonate or magnesium alloy for the chassis.
Adjustable Eyecups:
Twist-up or fold-down eyecups for comfortable use with or without eyeglasses.
Diopter Adjustment:
Diopter ring for fine-tuning the focus to match individual eye differences.
Close Focus Distance:
The minimum distance at which the binoculars can focus, useful for observing close-up details.

Specifications:
Objective Lens Diameter: 42mm, 50mm, etc.
Field of View: Typically around 300-400 feet at 1000 yards for standard models.
Exit Pupil: Diameter of the beam of light exiting the eyepiece, usually around 4-5mm for comfortable viewing.
Eye Relief: Distance from the eyepiece to your eye, generally 15-20mm, important for eyeglass wearers.
Waterproof Rating: IPX6 or IPX7 for waterproof models.

What’s in the box
1 x Binocular
1 x Waterproof Carrying Bag With Velcro Lock and Strip
1 x Lens Cover Cleaning Cloth and Hanging Strip
2 x Lens Cover
1 x Keyholder