very good for the money, the battery lasts many hours especially if you use it at low speeds.
at low settings for office use it is almost silent and provides a light breeze. if the above noise is not a problem it can move a serious volume of air and offer the corresponding coolness

3 stars because you can't remove the plastic parts that enclose the blades in order to clean them. Only with a cotton swab and with difficulty, because if dust sticks to the blades then compressed air won't do the job. If you don't clean it, the squeaking will start and over time the motor will break down.