I have, no, I had the TrackMan little more than one year in use. The first thing I got was pain in the elbow, I'm using the trackball many hours each day. Previously, I had the TrackMan FX Marbel, what ever is no comparison. To the Cordless equipment is as superfluous as a flat spare tire, especially when these radio transmission makes ever worse, as with my TrackMan Cordless. Furthermore, the ball is clearly too small, despite my previous inquiry in Logitrch that seem themselves do not know what the sale there. The housing is rubberized, was gummed. The rubber broke up already after three weeks on the edges and the resolution continued, now the case has only two very small spots that are rubberized. AMcht anything because without gumming which is also still awkward enough. That being said, that even the color of the keys dissolves into thin air. I have written to Logitech, the answer would have to be able to save, I know the BGB excerpts. This means I need not opinionated customer service that tells me why I have to return my trackball to the Händerl. While this was not my concern, so be it. Apart from the facilities in terms of the scroll wheel and the number of keys of TrackMan is a my eyes an impertinence. I do not think I ever had a Logitech product can, at least as long as cheap faces quality and buyer desire.
My personal opinion: Blender !!
Moreover, I have now disposed of the part. It has absolutely no purpose to communicate with Logitech.
