... 3)Long using life Battery and USB powered mini desk fan 1.1700RPM,3.1m/s wind speed,150mm blade ... current, power just 2.1W, energy saving. 4.Fan life can be 25000~30000 hours, can be used ... metal,bring simple sense of beauty and quality. 6.Fan is with control switch, two speed choices, pitch ... 62*190mm,product weight:535g,easy to carry. 8.Fan occupies small room, stable structure, can be placed on table ...