1.The sturdy frame material makes the monocular telescope last longer and can be used in any environment without affecting the experience. It is mainly used for outdoor sports, watching games, watching concerts, hiking and bird watching 2.16mm large eyepiece and 42mm large objective lens 10-30x42 zoom monocular telescope is equipped with a larger eyepiece and objective lens than ordinary monoculars, which guarantees higher light transmittance and brighter and larger field of view. Share the natural beauty and animal scenery up to 325 feet/1200 yards away with your friends or relatives. 3.Good electric zoom magnification of monocular telescope: The latest monocular telescope can help you get a view in your outdoor adventure. The monocular telescope observes bright and clear images through the large wide-angle lens of the light-gathering objective lens. It is very suitable for hiking, rock climbing, bird watching, ball sports, concerts and viewing scenery. 4.This mobile phone monocular telescope comes with a mobile phone holder and a monocular tripod. Easy to install, provide stable support, and comfortable to wear.