1. [One hand focusing, waterproof and anti fog]Ergonomic design can help you focus on the target quickly and accurately with one hand. rubber armor with stripes makes it comfortable to use, non slip grip and durable external hand protection. It has anti shake design. All of these provide high stability. IPX7 is nitrogen filled and waterproof, with anti fog coating and O-ring sealing optical element, which can prevent moisture, dust and debris and keep it clean at all times. 2. [Wide application range]This 80×100 Single eye is suitable for adults and ren. It provides clear and bright images and vision, and is also suitable for hunting, mountaineering, hiking, animal observation, camping, tourism, concerts, ball games, watching, driving, outdoor adventure and other activities. You can enjoy the beautiful scenery in the distance. 3. [Compact single eye]The compact and light single eye brings you a distant view by adjusting the eye mask and focusing wheel. This eyepiece is small and light. It can be used by one hand and is easy to carry. 4. [High contrast and resolution image]The latest optical technology, the high - definition monocular telescope equipped with BAK - 4 prism and full multi coating lens, ensures excellent light transmission and brightness, and the light transmittance reaches 99.5%. Our monocular has a low light night vision function, which can help you see things in low light and provide you with an amazing viewing experience.