[3 block wind] 3 levels of wind, you can adjust it freely, one level of wind breeze, 2 levels of wind cool breeze and 3 levels of wind strong, whether sleeping or outdoors, I can easily hold it. [Quiet, no noise] Silent design: The fast low-noise motor design makes this mini personal fan a silent fan, and will not be disturbed when you sleep again. [USB Power Supply] The cooling fan is powered via USB, so it can be conveniently used on computers, laptops, adapters and mobile power supplies. [Multiple uses] It is very suitable for office, family, dormitory, study, library and game room, you will only get a cool breeze; no noise space. [Small and light] Very small but powerful wind can help you save space and adopt non-slip design, stable when working, you can use it in office, kitchen, bedroom, living room and other places.