Features: 100% brand new and high quality. Mouse Name：MMR2, Buttons: 6 buttons with scroll wheel. Tracking systems: Optical. The Max DPI: 3200DPI（MMR2 white/black） 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. Feel comfortable, mobile and stability. Switch Life: 50 million times. Package Size: 15(L) x 10(W) x 5(H)cm. Weight: about 165g±5g（MMR2 white/black） Cable length: 1.5m ± 0.5cm Compatible with Windows XP, Vista, Windows 7, ME, 2000 and Mac OS...or latest. User for: The high-end players, gaming professional players. -----------------------MMR2 White/Black------------------------- NOITCE 1. The products we sell are brand new authentic, quality assurance, please rest assured purchase! 2. About Size, by our pure manual measurement, there may be 0.5 cm error. 3. Look forward to your positive feedback, we will give you five-star service 4. Our goal is to make sure that you have from us a pleasant shopping, any negative is not welcome, if you have any questions, please first time to contact us by e-mail, thank you for coming