Wide rubberized backlit scroll wheel of 8 mm width: Widened scroll wheel with special ribbed protector make the mouse control easier. The shape and the place of the scroll wheel are optimal for simultaneous movements of index finger from the left button to the wheel back and forth. High durability cord. 6 programmable buttons including 2 thumb buttons: 2 customizable thumb buttons allow to adjust mouse for its user's needs. Textured surface of the upper button decreases the risk of accidental «blind» hit. High precision optical sensor. DPI level indication: The chosen level of cursor speed is indicated by the color of the scroll wheel. Elongated Teflon feet: Specially invented Teflon formula ensures excellent gliding. Thanks to enlarged feet surface, balanced feet height and optimal place the mouse moves strictly horizontally. Stable operation even on high speed. Cursor speed control: Cursor speed can be adjusted on any mouse keys.