Originally from http://topgamemouse.com/best-gaming-mouse-2015/
It is one of the most expensive gaming mice on the market and includes two interchangeable batteries and an external charger. R.A.T 9 also comes with three different palm rests and three different grips.
It also features four customizable DPI settings and software to let you customize the mouse profiles for various games and has a Precision Aim mode that impedes mouse activity while aiming in FPS games. Without doubt, R.A.T 9 is one of the best gaming mouse available on the market.
More at Mad Catz R.A.T 9