1. Power supply mode: This product adopts USB power supply mode, which can be charged by computer, mobile phone charging treasure, etc., which is very convenient and does not need to be connected to a power jack, so it is flexible to use. 2. Size: The size of this product is 203mm. The moderate size is very suitable for personal use. It is also easy to carry and can be used anytime and anywhere. 3. Wind speed and noise: This product adopts three-speed wind speed control, and you can choose the appropriate wind speed according to your needs. At the same time, the noise of the product is lower than 35dB, which will not affect the mood or affect the working or living environment. 4. Operation: The operation method of this product is mechanical, which is easy to operate and easy to use. In addition, it can provide users with a more comprehensive air supply effect, making the air supply more uniform and comfortable, and there will be no partial blowing. 5. Charging and weight: This product adopts the support charging function, which can provide long-term stable use after being fully charged. In addition, the gross weight of the product is only 135g, which is light and easy to carry, and can be carried anywhere. The packaging volume of this product is about 88*45*150mm, which is very suitable as a gift or for personal use.