[1 minute setting] The unique design makes it easy to aim at the eyepiece and mobile phone camera. You only need to spend less than 1 minute setting up, saving your time and freeing your hands. [Suitable for a variety of eyepieces] The universal mobile phone adapter bracket can almost be used to install binoculars, monocular telescopes, telescopes, scopes, and microscopes. [Compatible with almost all mobile phones] Universal mobile phone adapter bracket, suitable for more than 99% of smart phone brand models! It is commonly used in iPhone, Huawei, Samsung, LG, Sony, etc. [Unique design] This mobile phone photo holder has a unique design, which allows users to adjust the position of the mobile phone holder to prevent the mobile phone holder from continuously taking pictures or turning off the phone according to the volume of the phone and the power keyboard. [Compact and high-quality materials] Full size 15 * 5.5 * 4cm Color: black aperture: 38-43 mm M circle Flat circle: 34-38.5 mm (for 32-50 mm telescopes) S circle Curve circle: 31-34 mm It is light, compact and easy to carry. This mobile phone camera holder uses soft material rubber and EVA to firmly protect your phone. Always start from the beginning