AURIN&reg; Optical Gaming Mouse, 6 Programmable Buttons, Up to 2400 DPI, Wired With USB Copper Core Cable and Colorful LED Light Anti-skid roller design, click more accurate, more reliable Internal aggravating iron design, move more smooth, more accurate positioning when playing games Ergonomic shape, comfortable using feeling, suitable for home and office use New Version: High Resolution Adjustable DPI:800-1200-1600-2400 6 Buttons, with scroll wheel, optical technology works on most surfaces