Professional 5500 DPI Gaming Mouse 7 Buttons LED Optical USB Wired Mice for Pro Gamer High Quality Feature: 100% brand new and high quality. Buttons: 7 buttons with scroll wheel. Tracking systems: Optical. The Max DPI: 5500DPI. Ajustable DPI Switch: 1000DPI / 1600DPI / 2400DPI / 3200DPI / 5500DPI; Ultra-precise Scroll Wheel. Optical technology works on most surfaces. Ergonomically designed, long-term use without fatigue. Intelligent connectivity, no need to code, plug & play. Built-weight iron, feel comfortable, mobile and stability. Switch Life: 5 million cycle. Size: 127L x 85W x 37Hmm. Weight: about 160g. Compatible with Windows XP, Vista, Windows 7, ME, 2000 and Mac OS...or latest. User for: The high-end players, gaming professional players. Package Content: 1 X Gaming Mouse Note:This wired mouse is black, and the backlight breathing light will automatically change color when in use.