Microsoft Wireless Mobile Mouse 3500 GMF-00009 Lochness Gray 3 Buttons 1 x Wheel USB RF Wireless BlueTrack 1000 dpi Mouse Hand Orientation: Both Hands Maximum dpi: 1000 dpi Power Supply: 1 AA Alkaline Batteries required (included) Operating Time: 8 months typical Distance: 15 feet System Requirement: For Windows-based PC: Windows 7, Windows Vista, or Windows XP (excluding Windows XP 64-bit) 100 MB of RAM Microsoft IntelliPoint software version 7.1 For Macintosh PC: Mac OS X v10.4.x-10.6.x 30 MB of RAM Microsoft IntelliPoint for Mac software version 7.1
