[Small Light Night Vision] - Arctic P9 Military Telescope features a built-in night vision function that allows normal use in low-light conditions. With auto focus and background blur adjustment, you can concentrate on observing the desired person or object. [4K 10-300x40mm High Powered Magnification] - Offers upgraded 10X to 30X magnification, delivering wider, clearer, and brighter views. The monocular telescope is equipped with BAK4 prism and fully multi-coated lenses. The larger objective lens allows more light transmission, resulting in brighter and sharper images. Provides clear, distortion-free viewing without black bars. [Waterproof and Anti-Fog] - Ergonomic design enables quick and precise one-handed focusing. Textured rubber armor ensures a secure, non-slip grip and durable external protection. IPX7 waterproof rating, combined with anti-fog coating and O-ring sealed optics, protects against water, dust, and debris, maintaining optical clarity. [Monocular Compatible with Smartphone] - Includes a smartphone adapter for quick alignment and easy installation on tripods. Compatible with most smartphones, allowing convenient capture and sharing of HD images.