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Expert Mouse®
Trackball with Scroll Ring

Mac / PC/ USB 2.0
A World Leader in Trackball Innovation
The Ultimate Trackball
All Day Comort
With an ergonomic design that is truly ambidextrous and an included wrist rest, the Expert Mouse® provides all day comfort for even the most demanding tasks.
Personalized Control
With the TrackballWorks™ software and four customizable buttons, you can tailor the functions of your trackball for a more productive and truly personal experience.
Scroll Ring
The brand new implementation of Kensington's award winning Scroll Ring® allows for fast, easy scrolling of documents and webpages right at your fingertips.
Superior Accuracy
Kensington's DiamondEye optical technology and large 55mm trackball allows for smooth and precise cursor control for even the most demanding of tasks.

Product Specifications:

Kensington Part Number

  • 64325


  • Wired
  • USB 2.0


  • Black/Grey


  • Kensington's DiamondEye optical technology


  • 4 Buttons (fully customizable) and Scroll Ring

System Requirements

  • Macintosh
    • Mac OS X 10.4 or later
    • Free USB 2.0 port
  • Windows
    • Windows XP or later
    • Free USB 2.0 port


  • Bus Powered

Cable Length

  • 4.5' (1.37 m)

Dimensions (l x w x h)

  • 6" x 5" x 2.5" (15.24 x 12.7 x 6.35 cm)


  • 13.1 oz. (0.37 kg)


Manufacturer provided specifications for Kensington p/n 64325 UPC#: 085896643258



  • Expert Mouse®
  • Wrist rest
  • Software CD
  • Quick Start guide

Customer Ratings

Write a Review 5 / 5 1 out of 1 (100%) reviewers would recommend this product
Verified Buyer Top 250 Contributor
Reviewer: HiggsBoson Location: Mammoth Cave, KY Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 My first cue ball mouse September 29, 2011 This is a pricey little rodent, however my wrists are already feeling better about life. The unit arrived a few minutes before I finished ordering it. Phenomenal OWC customer service is at work here as usual.

I would recommend this item to a friend!

Kensington Expert Mouse® Trackball with Scroll Ring Mfr P/N: 64325 OWC SKU: KEN64325 4 Button Trackball with large ball, exceptional control, and ease-of-use that has set the industry standard for more than 15 years. Kensington 5 Year Limited Warranty Ships: Same Day only $89.99
Add to CartKensington 64325 In Stock, Click to Buy Now