High-Precision 6,400 DPI Optical Sensor: Offers on-the-fly sensitivity adjustment through dedicated DPI buttons (reprogrammable) for gaming and creative work<br />5 Programmable Buttons: Allows for button remapping and assignment of complex macro functions through Razer Synapse<br />The Razer Goliathus Speed Edition provides a slick and seamless surface for zero-hindrance gliding under your gaming mouse<br />Optimized for all sensitivity settings and sensors. the breathtaking speed of the Razer Goliathus Medium, these cute, officially licensed capable companions will make the perfect clique ">