1Applicable Size: Telescope phone adapter, suitable for most smartphones with a width of 58?100mm, and the perfect match will largely improve the photography. 2Easy Installation: Easy to use and quick alignment, place the phone in the adapter, place the phone camera on the eyepiece, and use a knob to secure the adapter in place. 3Safe and Reliable: Soft plastic material can protecting your phone from harm, and screws can firmly and stably lock the phone. 4Quick Adjustment: Adjustable phone adapter, this telescope phone holder features a smart design that allows you to adjust the position of the phone holder to prevent the phone holder components from pressing the phone volume and power buttons. 5Wide Matching: Telescope phone clip can be installed on monocular, astronomical telescope, etc., which will surely meet your needs.