ERGO M575 is a wireless trackball in mouse form with plastic parts made from recycled material. The hand rests on the ergonomically designed housing, the fingers operate the mouse buttons, and the thumb moves the trackball. This eliminates the need to navigate the device in order to move the cursor, hence allowing both hand and arm to rest in a relaxed position. The trackball is smooth and pleasant to use and enables precise control, which is an advantage for particularly tight workspaces and busy desks.