Gotd Wired Ergonomic Vertical Optical 3D 1200 DPI USB Mouse Wrist Healing Buttons: 5 buttons. Tracking systems:3D Optical. The Max DPI: 1200DPI. 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: 103*75*53MM Weight: about 130g. Compatible with Windows XP, Vista, Windows 7, ME, 2000 and Mac OS...or latest. User for: The high-end players, gaming professional players.