Perfect for target shooting, hunting, archery, bird watching, etc. Designed with a belt clip. Anti-fog and life waterproof. Small size and weight light, both adults and children can use the monocular for spotting moon, traveling, hiking, camping, wildlife watching, astronomy, etc. The powerful 30X zoom monocular can bring you different viewing experience. It can be used as handheld telescope with low magnification, or connected with tripod for stable watching with high magnification. When you are using camera or smartphone to take a distant photo, the monocular with larger eyepiece can get better definition and is easier to focus. Large eyepiece can produce bigger image and more complete view, 42mm big eyepiece is more comfortable for watching. Corrective optical coating is good for color fidelity and minimize distortion. In order to provide superior light transmission, contrast and quality, our monocular telescope uses the BAK4 FMC lens which is the fully multi-coated film aspheric lens. This lens can be used at night or dark environment (but not complete darkness), such as concerts, opera, sightseeing and astronomical viewing. Specifications: Item name: Monocular Color:Black Material: ABS+ optical glass Size:155*40mm Magnification: 30X Objective Diameter: 42mm Prism Type: Roof prism FOV: 4.6 degrees Light path through space: 42mm Exit Pupil Diameter: 4mm Field line: 148m / 1000m Exit pupil distance: 10mm Focus mode: center the handwheel focus, right eyepiece fine-tuni Tripod Mount: None Anti-skid technology: Suppor Note: - There might be little error of size for manual measurement. - The colors deviation might differ due to different monitor settings, please kindly understand.