The patented HookUpz 2.0 is designed to accommodate all common smartphones on the market, including larger phones and phablets—even with a case on. It is super compact, lightweight, and offers a user-friendly design. You can quickly and easily connect your smartphone or phablet to your optics. The exclusive phone clamp and optical notch lock ensure a secure hold for both your phone and the optics. It fits a variety of optics with an outer eyepiece diameter of 25-58 mm. Store the HookUpz 2.0 in the included hard foam case when not in use. Go ahead and capture your adventures and discoveries through the lens of your favorite optics. It has never been easier to share those images and videos with others.