Nikon WX 10x50 IF Binocular (Black)WX binoculars 10x50 IF feature a super wide field of view. Among Nikon binoculars that have been highly acclaimed by enthusiasts of astro, wild bird and nature observation across the world, generation after generation, the WX models are the most suitable for astronomical observation. The WX binoculars realize a super wide field of view providing a sharp image to the very edge of the periphery, which redefines the concept of what binoculars can be.