The Steiner 2037 Military-Marine 10 x 25 Porro Prism Binoculars provide sharp, clear images and offer a wide field of view to help you keep track of your target. These binoculars feature a Sports-Auto Focus™ System to let you focus each eyepiece to your vision for image clarity from 20 yards to infinity, while the compact design delivers rugged durability and easy carrying.