USB Dual 120mm Control Fan, 5V Portable Cooling Fan for Flat-Screen TV Receiv...
3 gears, low (L), mid (M) and high (H), low-gear noise is only 23dB. The whole size of the fan is 9.64" X 4.92" X 1.81" after puting together. It can be used as a cooling fan for a notebook computer.