There are many details on the Super Telephoto Zoom Monocular. It can rotate almost any part, of course each part of rotation has a different function. It is great. I am in an office on the 16th floor, clearly see the car license plate number on the ground. You need to study the accessories, and you will find it very convenient after you are skilled. After installing the phone, At the beginning there will only be an image of a circle about 4 cm in diameter. You can adjust the magnification of your phone, The graphics will completely fill your phone. Great, I can recommend it.