Powerful Binoculars Roof prism binoculars with 10X magnification and 30mm objective diameter provide high quality clear image in low light condition. 305Ft / 1000yds, wide field view to view more subjects. Excellent BAK4 Prism Binoculars designed with BAK4 prism and fully multi-coated optics ensure superior light transmission and brightness with superior contrast and resolution. Its refractive index is higher than that of BAK7 and can effectively avoid dark angle. Sleek and Solid Rubber coated finish for an impact resistant, firm and comfortable grip, for a stable fit. The compact binoculars are durable and portable for different types of outdoor events. It is excellent for waterproofing and fogging, allowing you to take high quality images. Easy focus Binocular size is 5.2 * 5.9 * 2.6 inch, you will feel comfortable with your hands. The smooth center focus knob makes it easy to use and focus the binoculars. It guarantees fast and high precision focusing to get clearer views. Wide application Binoculars with shoulder strap and carry bag, This 10x42 binocular for adults is perfect for bird watching, travel, safari tours, wildlife viewing, hunting, hiking, climbing, concerts, sporting events, etc.