• Roof Prism Open Hinge, 5 Groups 7 Lens, High Definition Binocular, Lightweight and Compact

• 42mm Large Objective Lens Gives Wide Field of View, Perfect for Bird-watching and Observation

• FMC with Dielectrical Coating Ensure Light Transmittance, Providing Bright and Crystal Images

• IP67 Waterproof and Nitrogen-Filled to Avoid Fogged up Lens in High Moisture Environment

• 10x42mm Configuration That Can Catch More Details and Brings A Better Resolution