The powerful and highly precise sensor, with 4,000 FPS and 60 IPS, provides you with the accuracy that matters, even with the fastest movements. With the free software you can increase the polling rate up to 1,000 Hz, so that you are always one step ahead of your enemies with reaction times of 1ms. With an extra-large scroll wheel and... additional side buttons, our GS201 is ready for any adventure. The DPI button lets you switch from 1,000 to 4,000 dpi.