Traditional Porro Prism Optical Path Fully Multi-Coated Optics Individual Sports-Auto Focusing System Shock-Resistant Floating Prism System O-Ring Sealed - Waterproof Designed and built for outstanding performance in low-light conditions when many animals are most active, the Steiner Optics 7x50 Military/Marine Binocular combines multiple technologies and features to ensure clear and crisp views from first light through to twilight.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }