trackball logitech wireless m575 graphite

Logitech ERGO M575 WIRELESS TRACKBALL. Minimize movement and maximize comfort with the ERGO M575 - a wireless trackball with a profiled ergonomic shape. Your hand and arms will remain relaxed as you do not need to move them to move the cursor. Smooth and responsive thumb control can be used anywhere - and because there no need to move with the ERGO M575 trackball, it ideal for cramped workspaces. The ERGO M575 trackball was designed and developed to ergonomically match the shape of the hand. And