The base of the SlimBlade Trackball is made of a granite-coloured plastic with four rubber feet on the bottom to prevent it from sliding around on your desktop. Unfortunately, the trackball draws its power and connectivity from USB 2.0.
Comfortable for those physically unable to use a standard mouse; Heads-up display conveniently shows the current mode
Toggling between three modes complicates work flow; Expensive; Lacks Bluetooth; Can't customise buttons or alter trackball sensitivity; Large footprint