Ergonomically designed, long-term use without fatigueĩ. Optical technology works on most surfacesħ. Intelligent connectivity, no need to code, plug & playĦ. This is a new 5500 DPI 7 Button USB Wired Gaming Mouse, with multifunction, such as, high quality wire material: the red and black braided wire sync equipped the strong defense magnet ring which can strong anti-interference, Ultra-strong and durable, Gaming adjustment, Comfortable palm feeling, Relieve tired, etc.