1. [HIGH RESOLUTION BAK-4 PRISM]: The monocular binocular adopts a BAK-4 prism inside and a fully multi-coated lens, which improves the key functions of the monocular and guarantees excellent light transmission and brightness. The dielectric coating and phase-coating monocular ensure sharp, high-contrast and true-color images. Monocular binoculars bring brighter, clearer vision to all your outdoor adventures. 2. [WIDE AND HD VIEWS]: 12X magnification and 50mm lens diameter monocular provide clear, bright images and various fields of view, ideal for bird watching, hiking, camping, travel, wildlife, landscape, etc. Monocular binoculars perform well in low light conditions, which helps you see things in dim light (not for totally dark nights), giving you an amazing viewing experience. 3. [MODERN DESIGN]: This nitrogen-filled and waterproof monocular has a built-in lens dust cover that keeps lens dust/moisture/dirt out and ensures you see all details clearly. Its rubber finish is impact resistant and exterior protection allows it to withstand harsh weather conditions. The striped rubber armouring ensures comfortable handling and does not slip out of your hand. 4. [COMPATIBLE WITH ANY SMARTPHONE]: Equipped with a quick-position smartphone holder and tripod. Compatible with different types of mobile phones. Easy to install, allowing you to use the monocular with your phone and providing high-resolution images that you can share with friends.