Universal smartphone optics adapter fits nearly all smartphones with cases up to 3.75 inches wide ; Not Compatible with tablets or riflescopes Universal - Compatible with most optics including binoculars, spotting scopes, telescopes, microscopes (including slit lamps), monocular, endoscopes, borescopes and more
Compatible eyepiece diameters must range between 25-58mm in diameter Contains a patented self-centering, dual-spring, quick-release clamp and an optic cam-lock for a tighter grip on your eyepiece to prevent sagging and slippage issues Horizontal phone alignment is done using a variable pitch screw for fine control but can also be moved quickly b/w an iPhone (corner camera) And Android (center camera) positions Compatible with Dual Camera Phones