- Materials and optics: The optical components deliver high quality vision in harsh environments. The design is powerful yet ultra-compact and ultra-lightweight. The telescopes include an anti-shake system and a special tripod, providing stability during multiple zooms. - Complete accessories: Includes an aluminium alloy tripod and a universal smartphone holder. Compatible with almost all smartphones. A stable tripod for fast HD photography, enabling you to take beautiful photos. Built to adapt to harsh environments. - Widely applicable use cases: Essential equipment for bird watching, wildlife observation, hiking, mountaineering, camping, racing, beach outings, boating and yachting, horse racing, outdoor activities, theater, surveillance and travel. - 4K 10-300X40 HD picture quality: BAK4 prism lens design, 30x closer viewing and a large field of view. Provides clearer and more colorful scenery with excellent light transmittance and brightness for brighter, clearer images.