Many qualities, but ...

Strengths:
- The design, which adapts perfectly to the shape of the hand
- The price (exceptional value for money it must be emphasized)
- It slides perfectly on my mouse pad (Steelseries)

I have not yet tested the mice in play but here looks promising

Weak points:
- The scroll that is blocked (with notches)
- The cable is not braided, but nevertheless robust in air
- The fact that I had to look for 10 minutes after the software of the mouse on the internet ..

That's all.

Otherwise coli arrived without any trace of shock or opening, and ahead of the estimated time.
I recommend this mouse for people starting out in the world of FPS and having big ambitions