Features 

• USB + PS/2 both supported, offering perfect system compatibility. With USB there is no software driver required.                 Simply  Plug-and-Play and start using it right away

• Precision OKION optical sensor, works on most surfaces

• 800DPI high resolution and high performance optical sensor

• Three keys mouse

• Work perfectly for both right- or left-handed users

• Middle rolling wheel designed for up and down instant scrolling

• Four contact points to reduce resistance and ensure excellent mobility

• Easy controlling on most surface

• No mouse ball

• No need to clean mouse parts

• No need to use mouse pad