High-end optical engine, precise positioning. 7 buttons, including scroll wheel, left button, right button, advance, retreat, DPI switcher, fire key. Adjustable 1200 / 1600 / 2400 / 3200/5500DPI. Ergonomical design, comfortable touch, long-term use without fatigue. Intelligent connectivity, plug and play. Long switch life up to 10 million. Total 7 bright colors showing in turns, giving you a colorful visual effect. Suitable for high-end players, gaming professional players.