I have been using this for a long time. There is dust that I can't remove due to the structure. There is no instruction manual. Also, the cover on one side of the circulator's axis has come off and won't stay on, but I believe the original air-blowing function can be used without any problems. This is a compact and stylish Iris Ohyama circulator, PCF-HD15N. - Brand: Iris Ohyama - Model Name: PCF-HD15N - Power: 45W - Design: Compact and Stylish - Function: Circulator Thank you for looking.