Bushnell H20 Bioculars 10x42mm Black

BaK-4 prisms for bright, clear, crisp viewing. Multi-coated optics for superior light transmission. 100% waterproof: O-ring sealed and nitrogen purged for reliable, fog-free performance. Non-slip rubber armor absorbs shock while providing a firm grip. Twist-up eyecups. Large center-focus knob for easy adjustments. Longer eye relief.