Waterproof, BAK 4 prism, fully multi coated Binger KZR Series binoculars: Features:1. 100% waterproof, nitrogen filled, fog proof, O-ring sealed2. Long eye relief and twist-up eyecupes to accommodate eyeglass wearers3. Large center focus knob for easy, precise adjustments4. Ribbed, non-slip rubber armour for superior shock absorption and firm grip.5. Fully multi-coated optics for maximum light ...