Metal 10-300X Zoom HD Powerful Binoculars Long Range Quality Portable Professional Telescope Monocular for Hunting

High-concerned chemical : None Field of View : 9999 Eyepiece diameter : 20mm Prism Description : BAK4 Water Resistance Level : IPX4 Objective Lens Diameter : 40mm Lens Coating Description : FMC Magnification : 10-300 Focus Type : CENTRAL Material : Metal Type : Binoculars Origin : Mainland China