Navigate with greater comfort and precision while saving valuable desktop space with the Kensington Expert Mouse Optical USB Trackball. Its optical technology delivers precise cursor control with the touch of a finger while the two-button design provides an interface that's familiar to mouse users.

• KensingtonWorks lets you customize all 4 buttons, set cursor speed
• DiamondEye optical tracking technology for premium cursor control and accuracy
• Patented Scroll Ring lets you scan up and down pages with ease
• Large 55mm ball is designed as a perfect sphere to provide exceptional precision
• Detachable wrist rest supports hand and wrist for ergonomic comfort
• Reliable wired USB connection
• Kensington worked directly with Microsoft to provide professional-level solutions that look as good as they function, so you can work like a pro