Steiner Commander 7x50c Marine BinocularsProduct Features 7x Magnification is the marine standard, with a wide, stable image for tracking other boats, buoys and bridge numbers even in rough water. 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. High Definition Optics incorporate the finest index matched glass and advanced lens coatings for best in glass image clarity.