The anatomical shape of the mouse has not pleased me very well because I've abused only as a remote trigger for my Photobooth. Mouse paperboard on the ground and note before that people are expected to rise on it. The mouse has survived eight hours hard Treteinsatz. In the end though was all the mouse wheel, but because I simply take up all the keys as a trigger that was no problem! Apart from that it is now only ready for the recycling center, I am enthusiastic about the durability: D