Scroll Wheel - Move through your documents quickly without having to click the on-screen scroll bar.
Comfort - Get a grip with a comfortable design created for either hand.
Easy to Set Up and Use - No software to install, no feature setup required.
Microsoft Optical Technology - High Performance Optical Technology - no mouse ball. Optical sensor delivers greater accuracy and control.

Technical Details

Size (LWH): 5.4 inches, 5.3 inches, 2.2 inches
Product Details
Product Dimensions: 5.4 x 5.3 x 2.2 inches
Shipping Weight: 0.3 pounds (View shipping rates and policies)
ASIN : B004MWVLY6