This mouse is very nice, I have owned a lot of different gaming mice, some of them in the $100 - $150 range and this one is up there with some of those.
The responsiveness and feel are amazing.
You can set the DPI with a click of a button ( 6 Different DPI settings. )
There are a total of 4 side buttons ( 2 on each side )
The wheel supports vertical and horizontal scrolling.
It feels tremendous in your hand, I have been gaming with it for the last 2 days and have found the mouse that will replace my Logitech G502.
I would highly recommend this to others.
Quality - A
Functionality - A
Manufacturing - A
Design - A