Buttons: 7 buttons with scroll wheel(Two Side-Buttons, One DPI Switch, One
Working mode: photoelectric.
Strong Acceleration: 20G
Fixed Weight blocks: 21 +/- 1 g
Switch Life: 10 million cycle
32-bit ultra-wide data path
Weight: Approx. 165g
100% Brand New and High Quality!
Compatibility: Works with Windows XP, Windows Vista, Windows 7, Mac OS X 10.4 or later, USB Port
This mouse has 7 buttons, including scroll wheel, page forward, page backward, left button, right button, DPI key. Quick thumb-side buttons, fast forward and back and up and down to achieve the function.