I bought a set of 2 many years ago, and can use the bedroom only one notice of at least 4 to 5 years: He airs, and is quiet that you can still sleep. In relation to the size he makes already in stage 1 tidy Wind. Unfortunately, in only one direction, so you have to try, where the cooling effect is best. Would I buy again and again - had preordained 10 various other fan tried - all way too loud! The noise level of Zippi has not changed in many years nocturnal continuous running, quiet as the first day! And consumed in one stage only about 12 watts (level 2 20W).
