Designed and manufactured in Japan, the BD25s are a highly compact class binocular. These binoculars pack features that are normally only found on much larger models. The fully multi coated lenses and C3 prism coatings, allow for first class light transmission and guarantee for brighter and sharper images. All the internal optics are made from eco glass, making the manufacturing process very environmentally friendly. The dual barrel design makes the binoculars easy and comfortable to hold even for long periods of time. They also have a very close focus distance of just 1.8m. They are 100% waterproof and have also been purged and sealed by N (nitrogen) gas to prevent internal fogging. The body is rubber armoured to safe guard the internal lenses and this rubber surface also doubles as firm grip which allows you to hold the binoculars even in wet conditions.