The Targus Rechargeable Wireless Desktop Mouse offers the latest in wireless technology and functionality. Never have mouse usage interrupted again with the rechargeable batteries and USB charge cable that charges even while in use (no charge cradle required). Convenient wireless freedom enables uncluttered workspaces free from cables. Mouse movements are accurate and precise thanks to highly reliable RF wireless technology. The wireless receiver and charge cable easily insert into an extension port, eliminating the need to reach around your PC. The full-size ergonomic design makes this mouse a welcome accessory for extended use on your desktop or on the road. Productivity and convenience are further enhanced with the 4th and 5th buttons that are Internet navigation "back" and "forward" buttons.