The Eschenbach Vektor 5-15x21 are zoom binoculars that bring the details of images closer with its variable magnification. With an easy "slider" button on the bottom of the right side of the binoculars, you can easily slide the magnification from 5x all the way up to 15x. These binoculars have a lens diameter of 21mm and are impressive both in terms of their sophisticated technical features and stylish appearance. The Vektor 5-15x21 Zoom has earned the Red-Dot award, and come complete with belt bag, lens caps, and carrying cord.