It arrived in just 5 days. It works perfectly. The humidifier is exactly as described. This is the second one I've bought. The previous one broke down because I added water-insoluble essential oil to flavor it without first soaking the filter in water. To prevent damage, the filter must be thoroughly wetted for approximately one minute. Then turn on the humidifier for another minute. Then add about 3 drops to the bottom part of the filter, that is, where the spring goes. Be careful not to put the flavoring drops on the part that touches the ultrasonic mechanism, as it will be damaged and there will be no solution, since the oil damages the device. The best way to prevent this from happening is to buy water-soluble essential oils. But if done carefully, as I mentioned, it will work.