3D Enjoy 3D content on your TV with this new feature. - To use this function, you must purchase the 3D glasses. Smart Hub Your TV features Smart Hub, a multi-purpose entertainment and family center. You can use Smart Hub to surf the web or download and run applications. In addition, you can view or play photo, video, and music files stored on external storage devices. - Refer to the e-Manual for details. e-Manual Get help from a detailed, on-screen user's manual built into your TV. Smart interaction Access and control menu options and functions using motions. To use Smart Interaction, connect the TV camera (sold separately) to the TV. - Refer to the e-Manual for details.