The Cordless Desktop S 510 is a perfect match with todays flat screen systems. Its innovative flatter keyboard design gives you a consistent desktop look as well as an amazingly high level of comfort. Relax your wrists on the built-in palm rest ; and with one touch ; you can navigate the web or shuffle for a random music mix. Scroll pages vertically and horizontally with the optical mouse with tilt wheel ; and you can use it continuously for 6 months or more with the longer battery life. Enjoy o