Kensington Expert Trackball Mouse Wired Optical Black/Grey Scroll Wheel 48308 Whether you are doing fine

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Kensington Expert Trackball Mouse Wired Optical Black/Grey Scroll Wheel 48308 Whether you are doing fineDescriptionSpecificationsShipping The Expert Mouse Wired Trackball is the ultimate productivity enhancer that makes working at the desk quicker, more accurate and extremely comfortable for your hand and wrist. Featuring DiamondEye technology, the trackball uses optical tracking to precisely follow small flecks embedded in the large 55mm ball to provide smooth, accurate cursor control. The four buttons are customizable using our highly intuitive