Nikon WX 10x50 IF BinocularThe Nikon WX 10x50 IF Binoculars employ Abbe Koenig prisms, 3 ED elements in the objective group, field flattener eyepieces, and high quality multi coated lenses to provide an amazing, wide angle view of the cosmos. Nikon WX binoculars use individual focus eyepieces to provide focus from 40' to infinity. These binoculars are also rubber armored, O ring sealed, and nitrogen filled to be waterproof to 16. 4' for 10 minutes. The eyecups are twist up with