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 nitrog