M518 Specifications Sensor: Optical DPI: 1000-2400-3200-4800 (default) Buttons: 8 (programmable) Switch rating: 5 million clicks Backlight: Rainbow Polling rate: up to 1000 Hz Interface: USB 2.0 Cable length: 1.8 m Weight: 80g Size: 126 x 67 x 39 mm OS support: Windows 7 or newer Feature The ambidextrous ergonomic design accommodates both right and left handed gamers Anti-slip textured side grips Rainbow backlight with multiple selectable lighting schemes Advanced customization software