High Quality Presentation Clicker Wireless Presenter, it is equipped with top-grade microchip, up to 100 meters wireless range. Operating on 2.4G RF frequency, it is an ISM free frequency and can be used world-wide. It is made of nickel plating metal dome and silicone keypad, brings you comfortable touch feeling. Convenient Functions Comes with auto standby and deep sleep functions for energy-saving and durable use, and equipped with a separate switch and effectively avoids unwanted power consumption when you put it in your bag. Red Clicker for Powerpoint With the red pointer gets the whole room focused on your most important points. It also combines more functions of page up, page down, play slides, black screen for PowerPoint presentation. Widely Applicable The mini USB receiver supports plug and play technology. No driver is required. Operation system: Windows 7 or later, Mac OS 10.10 or later, PowerPoint, Keynote, PDF, Prezi and so on. Simply Plug & Play Built-in docking bay stores USB receiver for easy pack up and portability. Contact the customer service center if you have any problem and get a solution within 24 hours