1. Strong and: Highquality materials are also suitable for harsh environments. Powerful, ultracompact, ultralightweight. (Please note that use the telescope strictly in accordance with the instructions for use, which has many details, can rotate and stretch the focus, and can rotate and adjust the line of sight.) 2. , dust proof, shockproof design: Nitrogenfilled waterproof and Oring optical components can prevent moisture, dust and debris, and ensure the waterproof function of life. 3. High quality: The highdefinition lens with high focal length is made of highquality glass, which can reduce glass glare and ghosting caused by reflection, and shoot clear and clear professionallevel photos/videos. 4. Widely compatible: Distortion and unique fixture design compatible with most smartphones and mobile devices. Used for racing, beach, bird watching, boating/yachting, horse racing, hunting, outdoor activities, sports, theater, travel.