[Centrifugal air duct]: Lower wind resistance than the old direct-blowing fan, multiple cyclone compression speed superposition, completely crushing the old models on the market. [Simulation of natural air pressure, air convection principle]: Accelerate the downward flow of cold air and mix with hot air, quickly take away excess heat, and achieve a rapid cooling effect. [Low-power energy-saving chip]: Stable and long-term output without pressure, built-in AI protection chip, every second counts, to ensure safety. [ energy same high energy density battery]: Equipped with the same energy 21700 battery chip, strong performance, low power consumption, escort for your every trip. 89 mm compact body, easily fit into your pocket. Traditional bulky fans are large and heavy, like moving bricks, and they also take up space on the desktop. The seventh-generation mini fan can easily integrate into your life and say goodbye to the troubles of clutter and crowding. Aerospace centrifugal air duct, always experience the refreshing feeling of breaking through wind resistance. AI protection chip, stable and safe, long-lasting output. 8.9 cm mini portable body, smaller than any fan you have used. High-speed brushless motor, 29000 rpm, faster cooling speed. energy same battery, 21700 high-density compressed battery cell, one is better than three. It weighs only 105 grams, carry it with you, and there is no sense of weight, making you a mobile air-conditioned room in seconds. No hot lunch break, no embarrassing travel, no hot outdoor camping! Whether it is studying, working, traveling, picnics, outdoor sports or shopping, a handheld small fan can make you feel as cool as an air-conditioned room wherever you go. 1800mAh large capacity battery, long-lasting battery life, worry-free and labor-saving, easy to use all day. Charge for 2 hours, battery life for 8 hours. Hundreds of gears of infinite frequency conversion, wind speed can be set. The turbocharged fa