Alytimes Desktop Dual Bladeless Portable Adjustable Angles Scented Air Conditioning Air Cooler USB Electric Mini Fan (Air Fan-green) Powered by USB cable or 3X 1.5V batteries(not included) Add 50ml water or ice water to the box,then you will feel cool Flavouring agent will make air more fresh Material:ABS+electronic component Can be used for Notebook and PC cooling