Already after 5 minutes after I had tried the mouse, one thing was certain: I'm keeping both mice - one for work and one for home!
Granted, you have a little used to this mouse to change. Taking it for the first time in the hand so it does not equal "love at first click." But after only a few minutes you get used to and is amazed at how relaxing the work can be now. Take the mouse completely in the hand and puts quite loose forearm flat on the tabletop. Immediately you can feel how the forearm and hand remain absolutely relaxed moment during one uses the mouse. Even after a 9 hour day I get no more problems with the arm.
This ergonomic mouse I do not want to miss - and for the price, the effect can not be beat!
As for the technical: It works just as reliable as a flat or even more expensive mouse.
The second mouse I bought is the CSL - TM137U. Both mice are absolutely identical. The only difference is that these Perixx Mouse has smooth and glossy mouse buttons, the mouse does not CSL. The prices also vary - this one looks prettier and is slightly cheaper.
I am thrilled that one for so little money buys a reliable product that protects health.
For frequent users of computer mice this is my strong buy recommendation here.