Product of very good quality. The sound level of the device is quite acceptable and has also a rather muted effect which gives a mild character emitted noise. The function of the ion system, which turns on and off at will, works perfectly. The heat emitted We feel that does not seem too aggressive on the hair as may be felt on most hairdryers commercially. Moreover it seems to have a circuit breaker system that prevents 'grilling' the unit in case there would be a small accidental overheating and allows it to stand-by for the restart moments later. I see only positives in this one except for Braun, but all in all very relative to the views of the objective, its weight / size. But it must be probably due to the importance (and quality!) System 'embedded'.