This smart phone adapter connects your smart phone to a telescope, binoculars, sight or microscope, and takes your phone into the small world of video cameras and magnifying glass images in the distance. Explore the natural world easily through the screen. Easy to use; put the phone in the adapter, put the phone's camera above the eyepiece, and use the knob to fix the adapter in place The soft material can protect your phone from damage in three directions, and the screws can lock the phone firmly and steadily. and compact, easy to carry Material:plastic colour:Black Package Contents: 1 x Universal Cell Phone Adapter Mount 1 x Adjusting Ring-M 1 x Adjusting Ring-S Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.