Trackbar Emotion Wrist Rest

The Trackbar Emotion Wrist Rest is something interesting to consider – it connects to your computer via USB, and has a quartet of buttons as well as one wheel which allows you to scroll, click and move the mouse pointer wherever you want it to. Makes me wonder why one would want to buy (in essence) a four-button trackball for €125, when you can get a premium grade mouse at that price? Ah well, I guess ergonomics does have a role to play in this.