Mad Catz R.A.T.5 Mouse For Pcmad Catz R.A.T.5 Mous Quickly and easily adapts by adjusting in length to suit any hand size and grip style Five 6-gram weights can be added or subtracted in an instant for a custom weight system Featuring a 4000 DPI new-generation laser sensor with pinpoint accuracy 4 custom DPI settings 5 programmable buttons 3 cyborg modes Powerful ST programming software Lightweight metal chassis