1. The notebook cooler adopts a unique multi-speed adjustment design, which can be tilted, and the comfortable elevation design can soothe the cervical spine and meet the needs of a better environment. It has four cooling fans and a six-speed adjustment bracket to adjust the air volume. The product design is lightweight and easy to carry. 2. Material: ABS + Aluminum Alloy. Cooling Type: 4 fans with blue LED 3. It has an adjustable bracket, which is non-slip and foldable, and has various functions. It has 2 USB ports, leaving only one port. It adopts a digital display design, which is convenient for adjusting the speed. It can be adjusted in four height gears. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store