Lightweight, robust binoculars with superb handling, fast focus, great field of view and sharp optics. Focus Mountain 33 mm have a perfect size when you want to use your binoculars for longer periods of time. Easier to hold still and have a larger fields of view so you can find the object faster. With great optics at an affordable price this binocular is your best companion for outdoor adventures. The optical construction consists Bak-4 prisms, that are considered as one of best type of roof prisms as they are made of superior optical glass to produce a clear image. Together with an outstanding anti-reflective coating this binocular reproduces an incredibly crisp and natural image. Focus Mountain will give you a comfortable experience and good performance in a wide variety of viewing scenarios. It is 100% waterproof and filled with nitrogen gas to make sure you can use it even in the harshest conditions. • Lightweight and robust • Perfect for all kind of outdoor activities • Great optics with outstanding anti-reflective coating • Waterproof • Comes with a protective bag and a comfortable neck strap. In Focus Sport Optics top of-the-range binoculars you will find phase corrected prisms and lens elements made from exclusive ED (Extra low Dispersion) and Lanthanide glass and to guarantee maximum contrast, resolution and light transmission. Durable but lightweight materials such as polycarbonate and magnesium alloys are used in chassis and other parts to offer more practical, flexible binoculars. In addition, all of the waterproof Focus binoculars are filled with nitrogen gas in order to avoid fogging and assure an even performance in all other weather conditions. Buying any of the Focus Sport Optics binoculars is a promise that you will receive a quality product with the best value for the money and extensive warranty.