Connects your smartphone to your telescope, spotting scope, binocular, monocular, and microscope so you can capture images and video through the eyepiece Works with a wide range of mobile phone models, including all the latest devices from Samsung, Google, and Apple Unlike other adapters, features 3 directional knobs (X, Y, and Z axis) that perfectly align your phones camera with the eyepiece in seconds so you are ready to snap the perfect image; In addition, you can make tension adjustments to keep the phone firmly in place stands up to rigorous field use thanks to its robust, durable construction with a metal frame and polymer body fits any eyepiece from 35 millimeter to 60 millimeter in diameter including telescopes with 1.25 inch and 2 inch eyepieces