1.10-300X40mm Monocular Telescope: 10-300x40mm High Power Monocular Telescope for Adults - Provides clear and bright images. This monocular telescope has a wide field of view and is suitable for bird watching, hunting, hiking, camping, sightseeing and concerts. 2.BAK4 Monocular Telescope: The 10-300x40mm monocular telescope is equipped with BAK4 prism, ensuring excellent light transmittance and brightness. It has a low-light night vision function to help you see things clearly in low light (you can't see anything in complete darkness), providing an amazing viewing experience. 3.Monocular Telescope: Nitrogen-filled waterproof and O-ring optics prevent moisture, dust and debris, ensuring waterproof function, suitable for most weather and environments. 4.Perfect Accessories: This mini monocular telescope is easy to hold in one hand (1244 cm). A tripod and smartphone adapter are included in the package, which is very convenient for long-term viewing.