The humidifier is very small, so even doing the walk 24h / 24, I can not raise the humidity in the room of my daughter. In addition, the device broke down after 2 months. After several phone calls and mails, I managed to get it replaced with a new one. A few weeks later, again down! This time Ci, despite a promise from the distributor, they sent me a new appareail. So I very strongly recommend this purchase!