1.HD Focus Scope: Our monoculars feature long-lasting full multi-layer coated lenses, designed with 10-30x High magnification and 25mm wide-angled big objective lens. Large eyepieces a wide field of view when viewing the world, providing the highest enjoyment. 2.High Contrast and Resolution Images: Long-lasting precision design with all glass high end optics (BAK4 Prism & Multi-layer Film). This high monocular telescope allows for more light transmission and brightness, and the light transmittance forms clear and colorful images. 3.Widely Compatible with Smartphone: Share what you see with friends and families. The smartphone holder is compatible with almost all smartphones on the market, enabling easy installation and sharing, making it a great choice for your next trip. 4.Comfortable and Ergonomic Design: Ergonomic design helps you focus on your target quickly and accurately with one hand. The long-lasting rubber armor with grain provides a comfortable grip, is non-slip, and long-lasting external protection.