M513 Specifications Sensor: Optical DPI: 800-1600-2400-3200-4000-4800 Buttons: 7 (programmable) Switch rating: 3 million clicks Backlight: RGB Interface: USB 2.0 Cable length: 1.6 m Size: 131 x 70 x 42 mm OS support: Windows 7 or newer Feature High-profile design with enhanced palm support Excellent control for all grip styles Switch easily between multiple lighting schemes with just a button press Advanced customization software, including DPI support up to 6400 DPI