Get Your Mobile Phone Into Video Camera and Image Capturer in Distant, Tiny World . Explore the nature of the world easily through your screen. Compliable with microscope, telescope, binocular, monocular, nightvision spotting scope. Fit eyepiece diameter 28mm-47mm. Universal: With super large width range:54-90mm, Fit smartphone 6plus, 6,5s,5, Samsung Note , Sony, Sony Xperia Z and many other brands. Once purchase for long use --Main Part Made of Aluminum, Fully metal housing. And phone clamp made of high strength PA Plastic. Safe and comfortable --The outface to connect phone and eyepiece are covered by soft material . Keep your device from scratch and damage.1. There is also big type for eyepiece outer diameter from 32mm to 62mm(1.26"-2.44") which is compatiable with bigger spooting scopes, binoculars, small 2inch telescope eyepieces, etc (Choose "big type" in this listing). Note: Not for rifle scopes Not work on a rifle scope because the phone camera is too close to the eyepiece. Compliable with super large width range: 2.13"-3.54"(54-90mm). It fits almost all smartphones on the market. It is Compatible with ipohe 13 1212pro12pro max1111pro11pro maxXXS, XS Max,8,8PLUS,7;7PLUS,SUMSUNG Galaxy A12,A13, A51,A52,A53, S22,S21 and many other brands