description:... this model provides plug and play features and are designed for great work efficiency and either hand comfort.It featurs a 1200 dpi resolution optical engine for smooth mouse precise controlfeatures:- 1200 dpi optical engine, eliminates moving parts and dust accumulation- symmetrical, fits comfortably in either hand- popular metallic- grey finish- USB interface for play and plug featuresystem requirements:- Windows Vista/XP x64/XP/2003/2000- MAC OS-X 10.2.8 or later- available USB- portpackage content:- Genius mouse Navigator 320specifications:- interface support: USB- number of buttons: 3; left, right, middle button with Wheel- optical resolution: 1200 dpi- plug & play - no driver neededsystem support:- Windows Vista/XP/2003/2000- MAC OS-X 10.2.8 or later- dimension: 95x45x30 mm- gift box size: 135x135x40 mm- body weight: 63 g