This smart phone adapter connects your smart phone to a telescope, binoculars, observation mirror or microscope, allowing your phone to enter the camera and capture images in the remote small world. Explore the nature of the world easily through the screen. Suitable for most smartphones on the market with a width between 52-80mm, Easy to use; put the phone into the adapter, place the phone camera above the eyepiece, and then use the knob to fix the adapter in place The soft material protects your phone from three directions, and the screws lock the phone firmly and steadily. Lightweight and compact, easy to carry. Advantages: fast and accurate alignment, flexible telescopic clip, long handle (to avoid mobile phone buttons being squeezed) Function introduction: The adapter is suitable for optical instruments with various eyepiece sizes, and is suitable for most mainstream telescopes, astronomical telescopes, and microscopes on the market. Applicable cameras: single, double, multiple (please select the main lens for multiple cameras) Package includes 1* Universal mobile phone adapter bracket 1* User Manual 1* Adjusting ring-M 1* Adjusting ring-S 1* packing box