1.[Perfect Accessory] The 20x50 telescope is easy to hold in one hand. It can be connected to a tripod and a smartphone adapter (5.7 to 8 cm, compatible with most smartphones on the market). This facilitates long-term viewing. The telescope also comes with a cleaning cloth, a carrying case and a tripod. 2.[20x50 Telescope] Adult 20x50 High Power Spot Telescope - A complete 20x monocular telescope with a 50mm objective lens diameter that provides clear and bright images. This observation telescope uses a 20x50 telephoto lens for observation during outdoor adventures. You can easily participate in activities such as bird watching, hunting, hiking, camping, sightseeing, etc. 3.[Monocular Telescope] This high-end waterproof binoculars is fog-proof and dust-proof. The lens dust cover and O-ring-sealed optical components can prevent lens dust, moisture/debris and provide waterproof function, suitable for most weather conditions and environments. As an outdoor telescope, it pays more attention to waterproof performance. 4.BAK4 Monocular Telescope This 20x50 monocular telescope is equipped with BAK4 prism and multi-layer broadband green film lens, which ensures excellent light transmittance and brightness, with a light transmittance of up to 99.5%. The monocular telescope has a low-light function, which can assist you in observing things in a low-light environment and bring you an amazing viewing experience.