Clearly Superior Technologies, Inc. CST2545-5W (L-Trac) USB Wired Ambidextrous High Performance Laser Ergonomic 5-Button Trackball (Blac

Width 3.75' (9.5cm), Length 6.75' (17.1cm), Height 1.75' (5cm)
Ball Size: 2.25'
Resolution: User selectable 400, 800, or 1600 counts per inch
Made in the USA
Buttons: 3 (programmable) + 2 switch jacks (programmable) which allows users to plug in two external buttons (not included) for a maximum of 5 buttons

Technical Details

Size (LWH): 10.3 inches, 7.1 inches, 3.5 inches
Product Details
Product Dimensions: 10.3 x 7.1 x 3.5 inches
Shipping Weight: 1.5 pounds (View shipping rates and policies)
ASIN : B00ICQ6BZW