Defender Wired Optical Mouse has multiple functions. It has cursor speed control. The resolution setting button allows to adjust the cursor speed with one touch (1000/1200/1600/2000 dpi). Extremely durable rubberized coating Soft touch. Special non-slip coating is pleasant to the touch and ensures firm grip. Special Defender Quick Point software allows to customize buttons for required application. Enlarged legs ensure smooth and noiseless sliding.