The Pyra wireless mouse from Roccat has 1600 dpi resolution, a 1,000 Hz polling rate and exceptional glide to give you even more control over yourcomputer applications.General information:Wireless : YesOptical : YesNotebook/Desktop : DesktopMac/PC : PCRequired configuration : Windows XP, Vista, 7Port USB 1.1 or laterCD-Rom driveWeight : 90 gOther information : Resolution: 1600 dpiLag-free 1,000 Hz