Mad Catz R.A.T. 8+ Optical Gaming Mouse - Black - Sensor: PixArt PMW3389 - DPI Range: Up to 16,000 - USB Report Rate: Up to 2,000 Hz - Left/Right Mouse Clicks: Up to 50m - Total Programmable Buttons: 11 - Weight (Without Cable): 145g - Onboard Profile Memory - Dynamic Ergonomic Design - MR05DCINBL000 - 2 Years Limited Warranty