Usage Tips:[Fashionable ultra-thin design, innovative wind power] JISULIFE's latest portable fan adopts an ultra-thin design, simple and fashionable. Innovative five-blade fan, strong airflow, 30% increase in airflow, 50% increase in wind power, maximum speed up to 6000r/min, let you cool wherever you go [3 wind speed] The handheld fan can adjust the wind speed by pressing the power button, 1st gear soft wind for about 14 hours, 2nd gear cool wind for 9 hours, 3rd gear strong wind for 4 hours. (Security lock design, double protection. If you use the security lock, remember to unlock the security lock first (turn it to "on"), then press the power button to turn it on [PC material & low-noise operation] The JI mini portable fan body is made of PC material, which is wear-resistant, durable and odorless. It has a built-in fine DC brushless motor, which is more considerate for low-noise operation. It adopts the principle of rotational inertia, and the arc-shaped blades rotate more powerfully [Load-reducing structure design, enjoy the coolness] The pocket fan comes with a long lanyard that can be hung around the neck. There is no need to hold the fan all the time. The rear bracket design turns it into a desktop fan in seconds. It weighs only 104g and can be easily put into a pocket or backpack. It can be used for handheld/desktop/outdoor use, etc. It is suitable for work, travel, outdoor, sleep, makeup, commuting, etc. [Rechargeable battery and TYPE-C] The handheld mini fan has a built-in 2000mAh rechargeable battery and is equipped with a TYPE-C charging interface. It can be fully charged in just 3 hours and is compatible with any USB-C interface, such as sockets/mobile power supplies/laptops, etc.