10X42 Compact Binoculars for Adults - Long Distance, High Powered Binoculars with Travel Case - Extra Bright Light & Large Field of View - Lightweight, Water & Fog Proof, Hunting, Bird Watching

Magnification: Binoculars for hunting, 10x magnification & 42mm objective lenses. This high-definition binocular is made of selected glass to deliver much better resolution, providing edge-to-edge sharpness and clear light transmission.
Item size: 6.3 x 4.8 x 1.9 inches, 1.0 lb.
Coating: Hunting binoculars for adults and kids, quality FMC (Fully Multi Coated) lens and Porro/BAK4 prism; a multi-coated objective lens and eyepieces reflect light to ensure the viewing image is ultra-bright and sharper.
Durability: Binoculars for bird watching, durable and water-resistant, with a lightweight, portable design, shock and slip resistant, more comfortable to operate and a great companion for outdoor activities. Rubber armor provides a secure, non-slip grip and durable external protection.
Adjustable: Camo binoculars, easy to focus with or without glasses; eyecups can be twisted up and down for comfortable viewing. The center focus wheel is used to adjust the focus of both binocular barrels at the same time. Also, the central focus wheel and right eyepiece ring let you easily adjust to different viewing distances while maintaining high-definition vision.
Application: Binoculars for adults. The 10x42 binocular is perfect for adults, kids, hiking, camping, sport events, bird watching, concerts, plays, shows, travel, theater, opera, and many more. This binocular comes with its own carrying bag, neck strap, and cleaning cloth.
Exit Pupil: The exit pupil is calculated by dividing the objective lens diameter by the magnification (42/10 = 4.2 mm in this case). A larger exit pupil can be more forgiving in terms of maintaining a bright image in low-light conditions