SPEEDLINK PRIME Z-DW Customizable Optical Gaming Mouse with 8 Programmable Buttons, Red Maximum precision 3,200dpi optical sensor Excellent ergonomics, with eight programmable buttons, second, fully configurable scroll wheel plus profile switch Software offers extensive configuration and customization options Internal memory for profiles and macros Zero-response-time buttons for lag-free operation 64 colors for experience-enhancing scroll wheel illumination Flexible, sheathed 1.8m USB cable