... -metal design,mini size,good cooler Popular USB mini fan for promotionPower source plug: USBMaterial: MetalMeas( ... contracted metal style, noble and elegant. 6.Fan is with control switch, its angle can be ... (with box):390g,easy to carry. 8.Fan occupies small room, stable structure, easy to ... and refreshing, comfortable. 11.USB plug and play,no external power needed,USB power adapter required for the ...