High quality display remote, it is equipped with a first-class microchip and wireless range of up to 100 meters. Operating at 2.4G RF frequency, it is an ISM free frequency that can be used worldwide. It is made up of a nickel-plated metal dome and a silicone keyboard that gives you a comfortable touch.Convenient features include automatic backup and deep sleep functions for energy saving and long-lasting use, and are equipped with a separate switch that effectively avoids unnecessary power consumption when you keep it in your bag.The red Spotter with the red pointer allows the entire room to focus on your most important point. It also combines more features on the page, off the page, play slideshows, and black screen slideshows.The widely used mini USB receiver supports plug and playback technology.Operating system :Windows7 or later,MacOS10.10 or later, Slideshow, Keynote,PDF, Prezzi, etc.Easy to plug in and play with built-in interface Bay storage USB receiver for easy packing and portability.