Features Bright, multicoated optics: Multiple layers of anti-reflective compounds offer excellent brightness and resolution. Smooth central focus knob: Fast range of focus for quick viewing. BaK4 high index prisms: Extra-high resolution images thanks to these advanced prisms are available on every Nikon compact binocular. Durable and protective, rubber-armored coating: Provides a fast, sure, non-slip grip, wet or dry. Product Specifications: Focusing System - Central FocusMagnification - 10xObjective Diameter - 25mmAngular Field of View (Real) - 5-DegreesAngular Field of View (Apparent) - 47.2-DegreesFOV at 1000 yds - 262 ftClose Focus Distance - 9.8 ftExit Pupil - 2.5mmRelative Brightness - 6.3Eye Relief - 11.1mmSize (Length x Width) - 4.3 x 4.6 inWeight - 9.5 ozInterpupilary Distance - 56-72mmPrism - Porro