Sannysis(TM) Professional Colorful Backlight 4000DPI Optical Wired Gaming Mouse Mice 100% Brand new and high quality. Compact, Elegant, Stylish Adjustable DPI Switch: 1200/2500/3200DPI/4000DPI. Size: 130(L) x 71(W) x 43(H)mm. Compatible with Windows XP, Vista, Windows 7, ME, 2000 and Mac OS...or latest.