BaK-4 prism and multi-layer coating: Professional binoculars with BaK-4 prism and multi-layer coating that provide better brightness, sharper contrast and higher image quality. Bak-4 prism has better performance and its refractive index is higher, which effectively counteracts dark corners. Large eyepiece: The large eyepiece offers better visibility and a wider field of view, and the larger objective lens allows for more light, higher brightness and a wider field of view. With 50 mm lens diameter and 7x magnification. Grip-friendly rubber surface: Environmentally friendly and durable rubber gives you a secure and comfortable grip on the robust waterproof binoculars. Easy to focus: With these binoculars, it is easy to focus on the target. You can adjust the center focus to get a clearer image. The binoculars can also be installed on a tripod for more convenience when viewing for a longer period of time. Many uses: The binoculars are perfect for bird watching, hiking, hunting, sightseeing or at sea, as well as for sporting events, concerts, etc. Specifications: Color: Black Weight: 840 g Size: 18.3 / 17 / 6.4 cm Package includes: Binoculars, strap, carrying case, cleaning cloth, user manual BaK-4 prism and multi-layer coating Large eyepiece Easy-grip rubber surface Easy to focus Many uses