1. Material: ABS
2. Number of fans: 4
3. Adjustable gears: 7 gears adjustable in height
4. Folded size: 275x90x30 mm
5. Expanded size: 275 x 200 x gear height
6. Noise level: 21-23 decibels
7. Foldable for storage without taking up space
8. Large size compatible with all notebooks
9. Four-turbo silent large fan, play games without getting hot, wind circulating heat dissipation, no crash or blue screen