M618 Plus Wired Optical Mouse Ergonomic Vertical Mouse 1600DPI

1. High-end optical engine, precise positioning. 
2. DPI: 600/1000/1600DPI 
3. Switch Life: 3 million cycles 
4. Button: 4 buttons with scroll wheel 
5. Ergonomical design, comfortable touch, long-term use without fatigue 
6. Intelligent connectivity, plug and play 
7. Built-in PAN3509 chip