100% brand new and high quality. Mouse Name: MMR2, MMR4 Buttons: 6 buttons with scroll wheel. Tracking Systems: Optical. Max DPI: 3200 dpi (MMR2 white / black + MMR4 white / black). Ultra-precise Scroll Wheel. Optical technology works on most surfaces. Ergonomically designed, long-term use without fatigue. Smart connectivity, no need for code, plug & play. Feel comfortable, mobile and stable. Change Life: 50 million times. Package size: 15 (L) x 10 (W) x 5 (H) cm. Compatible with Windows XP, Vista, Windows 7, ME, 2000 and Mac OS ... or newer. User for: High-end players, games and professional players. Mouse version MMR2 cable has white and black two-color, random delivery, rely on the actual local inventory