Combining superb optical quality and durability, the Nikon Sportstar EX 10x25 Binoculars provide exceptional performance for watching birds, sports, or just for appreciating the great outdoors. They offer a 10x magnification, while the multilayer-coated 25mm objective lenses ensure the viewed image is bright and clear. The turn and slide rubber eyecups with multi-click allow easy positioning of eyes and comfortable viewing even for eyeglass wearers at the proper eyepoint. O-ring seals and nitrogen gas provide added resistance to the effects of changes in climate for added peace of mind.