1. The detachable design of the front net can be disassembled and washed by pressing the buckle. In hot summer, fine dust particles attack all over the sky, and the front net can be easily removed for cleaning with a simple operation. For health, please clean it regularly. 2.7 The fan blades are designed to produce more uniform and powerful air, which is different from the ordinary 3-blade fan in the market. The 7-blade fan is more conducive to the more uniform and powerful air outlet of the fan and can play a role in reducing noise. 3. This portable folding table fan adopts three speeds: strong wind speed, low, medium and high wind speed. Even at high speed, the noise is less than 30dB. When reading, working or sleeping, it provides you with a quiet, comfortable and relaxed environment. 4.3 speed setting can be adjusted, so that you can feel cool in summer. The folding base design makes the desk fan easy to carry. It has many uses and is an ideal choice for indoor and outdoor use. 5. Long battery life, only 60 minutes for charging and 8 hours for use. Adjustable, foldable, portable, suitable for home, office, outdoor and so on. When not in use, it is stored in backpacks, desks, suitcases, cars and cabinets.