The large trackball requires less fine motor control than a standard trackball and it is ruggedly built. BIGtrack has a left and a right mouse click button located behind the trackball to avoid unwanted mouse clicks, and switches can be plugged into the two switch jacks to activate the left and right click function. BIGtrack also allows for second mouse connection; both BIGtrack and a second mouse can be connected allowing simultaneous participation.
yellow ball makes it easy to get the cursor precisely where you want it. You can even use your foot or elbow.
Dimension - 8 D x 4.8 W x 9.5 H in.. Item Weight - 1.85 lbs.