1. High end optical engine, precise positioning. 2. 6 buttons, including the wheel, the left button, right button, advance, retreat, DPI switch. 3. Adjustable 1200/1600/2400/3200 / 5500DPI. 4. Ergonomic design, feel comfortable, long-term use without fatigue. 5. Intelligent connection, plug and play. 6. the life of the switch is as high as 10 million. 7. A total of 7 bright colors turns to show you a rich and colorful visual effect.