Orros Series compact binoculars are perfect for those who need advanced optical performance packed in a lightweight, compact design so you can carry in a pocket and use them for hours without tire. With BaK4 prisms and multi-coated lenses, Orros boats impressive light transmission and always delivers crisp, clear images. O-ringed sealed and nitrogen-charged, Orros Series is 100-percent waterproof and fogproof to take on the outdoors. Beyond the impressive optical performance, Orros is incredibly compact and lightweight yet also provides an offset, large focus wheel for more comfortable adjustment and no-slip armor.