The cooling fan is specially designed for cooling your laptop and the copper alloy cooler part delivers the best cooling effect. Low-noise design offers you a very quiet working environment, which makes it a perfect gift for you and your friends. Features: Copper Alloy Cooler Part Delivers the best cooling effect. Insert Sanyo chip motor of high speed and high-power High speed and high power design, this cooling fan have the advantages of super silence, high speed and great wind, and its life won't be affected by dust. Intelligent Control System Built-in MCU Chip can monitor the real-time temperature and automatically control the speed. The higher the temperature is, the higher the fan speed. Multi-color Breathing Lights Multi-color light effects are available, which offers you different and unique using experience, and can be turned off. Low Noise Built-in sound-absorbing cotton provides great mute effect. Specification: Brand: COOLCOLD Item: Cooling Fan Model: K30 Scope of Application: For 17inch or less or Laptop with side air RPM: 1100-450010% Air Volume: 23.35CFM Voltage: DC9V Item Size: 167 * 86 * 50mm / 6.6 * 3.4 * 2inch Fan Size: 75 * 75 * 25mm / 3 * 3 * 0.98inch Weight: 210g / 7.4oz Package Include: 1 * Cooling Fan 1 * Manual 1 * USB Cable 4 * Silicon Case 1 * Non-slip Plate