... carry 2.USB Fan with Aluminum leaf 3. USB power supply,5V,safe&convenient 4. Low noise,long life ... DC brushless motor,strong wind, super mute3.5V USB power supply,new environmental material,special mesh enclosure design, all has ... of DC brushless technique,lower runing voltage and current, power just 2.1W, energy saving.5.Fan's life ... ’s option.12.Wire length:1.2m quiet personal usb computer mini fan