Brunton Echo Compact - Dual Hinge Binoculars Lightweight (12 oz) and Easy to Pack Waterproof/Fog proof with Full Multi-Coated and Nitrogen Filled Lenses for all Weather Viewing Compact with Amazingly Bright and Clear Optics Includes BaK-4 Prism Glass, Twist-up Eye Relief System, a Polymer Frame with Ergonomic Body Armor, Lanyard, and Case Limited Lifetime Warranty