Features: 1.Fan appearance simple fashion, easy to use 2.Three- level combination to adjust wind force to meet the use of various environments; (1)A sleep breeze: Gentle wind does not disturb sleep; (2)Second Fresh cool wind: double refreshing, eliminate the sultry heat; (3)Three strong wind: Instant cool, strong wind speed.3.Can be used as USB Plug -in, computer, notebook, mobile power, mobile adapter to the fan input current. 4.Use brushless motor: low interference, smooth running, long life, safer, more stable, less sounds. 5.Using the international standard 18650 capacity lithium battery, quick charge with the use of charging, energy and electricity saving.