Product parameters: Basic parameters: Mouse Core: Smart Quad Core Number of buttons: 8 buttons Working method: optical engine Transmission method: wired Mouse interface: USB2.0/3.0 System support: Windows XP/Vista/7/8 Mouse line length: 1.8 meters Product size: 121*65*40mm Resolution: 4000 CPI Image processing: 2.41 million pixels / sec Frame rate: 6666fps Button response: 0.2ms