1. contrast and resolution images: precision design with fullglass end optics (BAK4 prism and multilayer green film). This powerful monocular telescope offers greater light transmission and brightness, producing clear and vibrant images. 2. 10X42 performance magnification: It provides up to 10x magnification with a 42mm objective lens. This magnification allows clear viewing at distances up to 914 meters, delivering an amazing visual experience for travel and birdwatching. 3. Easy to use: You can quickly and effortlessly observe landscapes with one hand. Adjust the eyecup and focus wheel until you achieve a clear and bright image. It comes with a smartphone mount and an extendable, stable tripod for capturing HD photos or videos. 4. Waterproof: The nitrogenfilled, waterproof, and builtin dustproof housing protects the lens from dust, moisture, and dirt, keeping it clear at all times. The fogproof coating and Oringsealed optics ensure reliable performance in various conditions.