1. Cool light, cooling fan 2. The fan switch is adjustable, purifies the air, and runs silently 3. No need to drive, one-key automatic adjustment, no matter whether it is office or game entertainment, more→it can be easily switched 4. Ergonomic design, comfortable grip 5. Prevent sweaty palms, cool in all directions, comfortable and cool, smooth office games 6. The DPI speed corresponds to the light color, press the DPI button to switch, USB plug and play 7. Metal 3D roller, light effect, two-sided design of metal anti-skid roller, anti-skid and anti-sweat 8. The IC chip is cooled in all directions to prevent the chip from heating up in the game 9. Working mode: photoectric 10. Button life: 20