[Ultra wide visual field]- Viewing far away from 1000 yards can reach the width 303ft visual field, will see the distant scenery and animals much more clearly, it is the best choice for you who likes to take part in outdoor or indoor activities;[High-quality optical lens] - BAK4 prism, FMC optical coating lens, 42mm ultra large objective lens, bringing you more clearly and brightly sight of bright-colored scenery; Roof structure prism provide a particularly stable imaging;[High rate focusing]- Focus system with 10 times magnification, you will see the distant fluttering feathers, high power binoculars allow you to focus the distant moving objects and scenery, viewing details clearly;[Waterproof and dustproof design]- Filled with nitrogen, structure with waterproof ring, achieving the effect of waterproof and dustproof, so that it can be used normally even no need to worry about in any environment;[Compact and durable design]- Compact shape and appearance, durable metal inner hull structure, classic and durable;