1.HD Dual Focus Scope: Get a high-quality image 10X closer. A 50mm objective lens a wider field of view. Ideal for camping, hiking, bird-watching, or stage-watching. Whenever you need a better long-distance view, just take it and enjoy. 2. Monocular: This HD monocular is waterproof, fog-proof, dust-proof, and shockproof. It has a built-in lens dust cover and o-ring sealed optics to prevent lens from dust, moisture, and debris, ensuring reliable waterproof performance. Suitable for most weather and environments (note: it cannot be used in heavy rain for a long time or soaked in water). 3.Comfortable and Ergonomic Design: Ergonomic design enables you to focus on the target quickly and accurately with one hand. The durable rubber armor with texture provides a comfortable grip, non-slip, and durable external protection. 4.High Contrast and Resolution Images: With advanced optics technology, this HD monocular telescope is equipped with a BAK-4 prism and fully multi-coated lenses. It has low light performance, allowing you to see things in low light conditions (not in complete darkness), providing an excellent viewing experience.