At first, I was worried because when I used it, it smelled like oil and grease. Now it's okay. It is powerful, very high-quality construction for its price, and on the first level, it is essentially silent.

The fan has a metal base in the shape of an X (legs) and is quite stable. It is also telescopic with adjustable height.
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The speed controller is a rotating ring with three settings and a power of up to 50W. At the first setting, it is almost silent and the airflow is small. At the other settings, the noise is quite tolerable and the airflow improves. According to the manufacturer, the maximum airflow value is 49 cubic meters per minute and the maximum noise level is 50db.
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It is quite lightweight and can be easily carried with one hand. However, despite its lightness, it is quite stable and durable.
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Overall, I was satisfied and it covered my needs for the summer months that I used it, except for the very strong heatwave when I had to turn on the air conditioning because I live in a penthouse.
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Edit 14/09/2024: Disassembling the fan blade for cleaning and maintenance is equally easy. After so many years of trouble-free use, I am completely satisfied. The product warranty is for 2 years.