Steiner 7x50 Military/Marine BinocularsThe Steiner 7x50 Military Marine Binoculars use a flexible silicone lens mount to absorb severe shock, impact, and abuse without damage. The Sports Auto focus system lets you focus each eyepiece to your vision once, then keeps images razor sharp from 20 yards to infinity. No more chasing focus on moving objects. These military binoculars have been developed for robust all around use.