- 10-30x40 high-powered magnification: This monocular offers 10x to 30x zoom on a 40 mm objective lens, delivering a brighter, clearer view at varying distances. Adjust the magnification to match your needs for detailed viewing. - Upgraded large, comfortable objective lens and eyepiece: The monocular uses BAK4 prism with FMC green film and HD blue film; upgraded 20 mm ocular lens and 40 mm objective lens broaden your field of view and reduce visual limits. - Waterproof fogproof design: Made with aluminum alloy and rubber housing; high-purity nitrogen inside the optics prevents dust and internal fogging, ensuring reliable performance in all weather. - Crystal clear view with dual focus: High light transmission yields brighter, higher-contrast images. The eyecup twists up for comfortable viewing; tweak the focus and zoom until the image is crisp. - Durable and portable: Solid construction and compact size for everyday outdoor use. - Use scenarios: Birdwatching and wildlife observation at distance; scenic landscapes or cityscapes during travel; outdoor sports events or hiking where quick, clear distant viewing matters.