HD focus monocular with long lasting full multi layer coated lenses. 10x magnification and 25 mm wide angled objective lens. Large eyepieces provide a wide field of view for comfortable viewing. High contrast and resolution images. All glass high end optics with BA K4 prism and multi layer coatings. This design enables more light transmission for brighter, clearer, and more colorful images. Comfortable and ergonomic design. Ergonomic construction allows quick and accurate focusing with one hand. The long lasting rubber armor with a textured grain provides a comfortable, non slip grip and durable external protection. Waterproof and durable. This monocular is waterproof, fog proof, dust proof and shockproof. Built in lens dust cover and o ring sealed optics help prevent dust, moisture and debris entering the lens. Suitable for most weather and environments. Note: not suitable for prolonged use in heavy rain or submersion.