Features: The green films coating of optical lens makes the scenerys comfortable and relaxed, with a flat and wide field ofvision, which improves the effect of eye protections and color reproduction. 30MM large objective lens extinctionsthread increases brightness, and the inner wall of the objectives lens is sprayed with extinctionspaint to effectively prevent light from scattering in the objectives lens barrels and eliminate stray light. Coated with dust-proof greases to absorb dust and particles. The 10-30X30 monocular telescope uses a magnification of 10 times to 30times, and theimage is clear and bright, that you can get the best views in outdoor exploration. Equipped withBAK-4prism and FMClens, it brings you clearer and more colorful scenerys. Ensure excellent light transmittances and brightness, make yourvision brighter and clearer, and provide clearimages. The compact and sturdy body of the telephoto telescope enables it to with stand bad weather, and the mirrors is filled with highpurity nitrogen, waterproof and anti-fog functions, which canalways keep clear. This portable telescope is ultraportable and light. Compatible for smartphones and easy to install. Idealfor outdoor enthusiasts and wildernessexplorer, it is essential for bird watching, wildlife, hunting, hiking, mountaineering, camping, monitoring and travel. Specifications: Material:ABS Size:Approx.12x4x4cm/4.72x1.57x1.57inch Color:Black Multiply: 10-30x30 (zoom) Objective lens: 30mm Eyepiece: 15mm PrismSystem: roof Coating: anti-reflection green films Waterproof: rain proof Package Includes: 1x Monocular Telescope note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.