PRODUCT FEATURES:

• The Crystal Blue Scrolling Wheel. Convenient Scrolling / Zooming Functional Wheel with The Great Look of Crystal Blue Neon.
• Optical Sensor. Accurately Work on Almost Any Surfaces with Superior 1500 DPI.
• Button-Less Design. The Crystal Shell Combines the Button and Can Sensitively Swing as Button Click.
• Works with Both USB or PS/2 Port
• Sensor Detects Motion on All Kinds of Surfaces
• Scroll Directly from Your Mouse without Having to Use Scrollbars
• Zoom Directly from Your Mouse without Needing to Use Menus or Toolbars
• Compatible with All Windows 98/ME/2000/XP / Mac OS 8.5 Above