Clear the air with this Portable Travel USB Air Humidifier Compact size and adopts USB power supply Has a 350ml water bottle to match, perfect for car, office, travel and more Adjustable length and can filter water before atomising Silent humidifier adopts newest ultrasonic technology 35ml/h mist spray and humidifying efficiency of up to 99% Multi-functional humidifier can help keep your living space humid Built-in sliver ion insulation filter can effectively filter impurities For product specifications see Full Details Freshen the air with this Portable Travel USB Air Humidifier for 11.99 pounds