* Precise optical sensor
* For Windows 2000/ME/XP
* Perfect for home, office or mobile users
* Auto shut off-battery saving function

--Specifications and external appearance are subject to change for improvements without notice.
--Microsoft, Windows and the Windows logo are trademarks, or registered trademarks of Microsoft Corporation in the United States and/or in other countries.
--All other trademarks are the property of their respective companies and are hereby acknowledged.