Backwards compatible with all Magview S1 and S1 Mini Spotting Scope adapters, the new SYNC phone Plate uses built-in magnetic alignment to automatically center your phone to your optic- no bulky cases or clamps required. Simply align the SYNC Plate on your phone with the provided alignment tool, connect to your spotting scope, and SYNC takes care of the rest- so you're always ready to capture the moment. FeaturesIncludes Alignment Tool Note: S1 or S1 Mini Adapter Required for use (Sold Separately).