The fan doesn't coresponds to description. The noise level stated in description is 31db, however the real readings are around 43-47db at 10cm distance. Don't recommend to buy if you are looking for quite fan.
it is 3.8w, not 1.6 if you plan to use it in 3dprinter, please note it is 3-4 times heavy than cheap 4010 fan!
noisy like a Boeing, but produce AMOUNT of air flow