Portable Optical Wireless Mouse USB Receiver RF 2.4GHz For Laptop PC 6 Keys 800/1600dpi Red Colo 2.4GHz wireless transmission up to 10 meters operating distance. Built-In mouse memory, no recording is needed after battery replacement. With 6 Keys, including Scroll Wheel, Page Forward and Page Backward buttons for easy Internet Surfing. Intelligent connectivity, no need to code, plug-and play. Cool Shiny is a registered trademark protected by US Trademark Law