Universal smartphone digiscoping optics adapter:connect smartphones or phablets to a variety of different optics. Then, use built-in camera applications to take pictures and record video through the eyes of your optics. HookUpz 2.0 is NOT COMPATIBLE WITH TABLETS OR RIFLESCOPES. The HookUpz 2.0 is only compatible with optic eyepieces that have an outer housing diameter that range between 25mm-58mm and a depth of at least 14mm (0.6 inches). Use with straight or slightly tapered eye pieces: note that complex shaped eyepieces may not work. IS-200 contains glow in the dark rubber pieces to increase visibility in low light situations. Clamping mechanism has a 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. Re-designed horizontal and vertical adjustment features: more compact and ergonomical. Control vertical alignment on the top: should not interfere with any side buttons on your phone. Includes a protective EVA zippered storage case and an optional lens spacer for added eye relief. The 2.0 is backed by Carson's limited lifetime warranty.