1.monocular telescope Good- Power Zoom Magnification: The latest monocular telescope can help you get the view in your outdoor adventures. The monocular telescope observes bright, clear images through the large wide-angle lens of the condenser objective. Great for hiking, rock climbing, bird watching, ball games, concerts, and scenery watching. 2.16mm large eyepiece &42mm large objective lens The 10-30x42 zoom monocular telescope is equipped with a larger eyepiece and objective lens than a normal monocular telescope, guaranteeing more light transmittance and a brighter and larger field of view. Share the natural beauty and animal scenery of up to 325 feet/1200 yards away with your friends or relatives. 3.The sturdy frame material makes the monocular telescopes last longer and can be used in any environment without affecting the sense of experience. It is mainly used in outdoor sports, watching games, watching concerts, hiking, and bird watching 4.HD Good- Power monocular telescopeThe monocular telescope provides 80x magnification, the objective lens diameter is 100mm wide lens and wide field of view, allowing you to get the view in your outdoor adventures, perfect for outdoor enthusiasts and nature explorers, and must-have device. Suitable for bird watching,hiking, climbing, camping, surveillance and travel.