Specification:Model: G3000 MouseWay of working: laserInterface of mouse:USBOptical resolution: 2400DPIKey Number of mouse: 6Ergonomics: supportDPI mode: 800\/1600\/2400Refresh rate: 4500 frames \/ secMoving speed: 30 inches \/ secondImage processing: 5.8 megapixels per secondSPI sampling time: 1 msaximum acceleration of G: 8Package included:1 x mouse