B094FQNFTD ZHTT 30X40 Mini Compact Binoculars High Power Bak4 Fmc Hd Binoculars for Adults Portable Binocular Telescope Night Vision Waterproof Binoculars for Bird Watching, Hiking,Travel,Hunting Telescope

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Multi Coated optics guarantee superior light transmission and brightness
Both-hands operation
This product have dual focus capability (front and back adjustable zoom)
Powerful, ultra-compact and ultra-lightweight
Objective Lens: The diameter of the objective or front lens. The larger the objective lens, the more light that enters the binocular, and the brighter the image