WoneNice 4" Retro Silent Office / Home Light-Weight USB Powered Metal Desktop Fan Cooler - Laptop, NetBook, Computer, MacBook (Pink) It is small and does not have much of a footprint so it won't take up much room. its small size will ensure you can take it anywhere. This fan blade measures in at about 4". It is perfect size for cooling your laptop or computer. And the 3 blades produce enough air to help keep you cool on those hot summer days or any day for that matter. It has a small rocker arm in the back that turns the fan on or off. There is one speed powered by its motor. The cable for the USB is long enough so that using this fan should not be problematic. And provide a nice, extremely quiet cooling system via your USB port. This fan runs very quiet, and its position is adjustable. it can be adjusted at 360 degrees both up and down but not side to side. It is made of metal, has a strong wind capability. Most fans in this price range are plastic.