Shortly my impression: This fan may be appropriate Application Specific - It is not an allrounder and the price is not much to be expected in my opinion .. My application: generate airflow in an amplifier. Is to say, my hi-fi amplifier is suitable for hot at higher loads for hours and I wanted the more airflow coming into the housing from the outside. So I looked for a fan which is schwenbar, can be placed on the amplifier and "down" blows and not itself caused an accumulation of heat. Well, this is, if it considers, my feeling ideally suited. Tilted, the air stream which is really not much, but should pay for the removal (Well, he stands on the amplifier and blows right into it) fit perfectly. It is quiet, but what about loud music matter. The design / construction is not just robust and we think the same, "I hope he does not fall down and breaks into" tens "parts."
If it should be used as a summer-table-fan, then it's really true that arrives nothing to 50cm, - If you really want to feel an air pressure! Maybe it's really on the propeller that this is not optimal, because rotate fast enough he does ...