The Specs
"OUTPACE. OUTRUN. OUTLAST. OUTMATCH.
The Vengeance M65 laser mouse is a finely-honed FPS gaming tool. It offers an 8200 DPI sensor for superior tracking, a dedicated sniper button that lets you switch resolution for extremely accurate shots, and an adjustable weight system for a custom fit to the way you play.
HIGHLY ACCURATE TRACKING
If you’re good at gaming, you’re probably playing against opponents who are just as good. M65 provides the reliable response you need to give you a competitive edge.
ADVANCED CUSTOMIZATION AND CONTROL
Because winning isn’t just about reflexes and accuracy – you need quick weapon selection and the ability to set up your mouse to do exactly what you need it to do.
COMFORTABLE FOR HOURS OF GAME PLAY
Carefully selected materials and superior ergonomics, combined with precise tracking and advanced customization, help M65 cross that point where it doesn’t feel like a mouse, but like an extension of your hand." Source - "http://www.newegg.com/Product/Product.aspx?Item=N82E16826816009"