KEY FEATURES Small and portable self-designed vacuum laptop cooler. Fast cooling at least 10-40degree. Unique design game style cooler. Manual fan speed switch. USE TIPS Begin to use, in order to fast cooling, open to the largest (3000 RPM), temperature drop down, About 15 minutes, transferred to the minimum (1500 RPM) remains constant, so that we can keep in a reasonable working temperature, and can prolong the service life and lower noise.