[Heat Dissipation Artifact] The mini fan has a built-in powerful motor that supports high-speed rotation of the blades to generate strong wind. The fluid mechanical cover is used to strengthen the wind brought by the blades. You can even feel the wind 1m away from this small fan. [Speed adjustment] The cute hand-held fan has 2 speeds adjustable to meet your different needs. Just press the power button to adjust the speed. Press once at a low speed of 3500r/min, and then press at a high speed of 4000r/min. [USB rechargeable] Powered by an upgraded rechargeable lithium polymer battery, it can support a mini fan to run longer than ordinary lithium batteries of the same capacity, and it is equipped with a USB cable compatible with any USB port, such as a computer, mobile power supply, and ordinary socket . [Small and portable] This fan is only 12.6* 7.9* 2.1cm/ 4.9* 3.1* 0.8in. It can be put in your pocket or bag and carried with you all summer. [One machine with multiple functions] It is suitable for indoor and outdoor use. The personal fan can generate natural wind to keep you cool when reading, exercising, queuing and traveling. It is your best partner in the hot summer.