Award-winning Scroll Ring for more user efficiency and increased productivity
Large 55 mm ball for maximum precision, control and comfort
Optical DiamondEye technology delivers superior precision
TrackballWorks lets you customize all 4 buttons and set cursor speed
Ambidextrous design
180 cm USB cable for reliable use without batteries
Removable wrist for added comfort
Compatible with PC and Mac: Windows 98, and Mac OS X