The Coleman 10x50 Waterproof Binocular features 10x magnification power and BAK4 porro prisms. It is suitable for camping hunting sports events and bird watching. The binocular is waterproof fog-proof and dustproof ensuring smooth and tension-free operation even in harsh environments. The porro prism inner focus design helps deliver bright and vivid images with improved light transmission efficiency and comes enclosed in a rubber-armored housing that provides extra protection in addition to offering a non-slip grip. The eyecups of the binocular can twist up to ensure hassle-free usage by sunglass/eyeglass wearers. Fully Multi-coated Optics Waterproof Twist-up Rubber Eye Cups Nitrogen Purged Dustrpoof Magnification: 10x Objective Lens Dia: 50mm Field Of View: 5 Exit Pupil: 5mm Relative Brightness: 25 Eye Relief: 16mm
High-index Bak4 Porro Prism