Designed for the adventurous type, Sierra binoculars keep foul weather out and deliver bright, crisp views with 100% waterproof, fog-proof construction and premium, multi-coated optics. Encased in a rugged, rubber armor these binoculars are protected against rough handling. With 50 mm lenses these binoculars have a 12x magnification. They feature a roof prism type and have a 244 ft. field of view at 1000 yards. They are not tripod adaptable but a neck strap is included so they're always in easy reach. A carrying pouch is included for safety during travel.