USB Portable Mini Donut Humidifier
The length is adjustable so it can be combined with different containers, such as mugs, ordinary glass bottles, mineral water bottles.
USB cable is more easy to insert and convenient for you to get power with any USB port, providing you better using experience.
This function can help you to avoid wasting water and electric power.
No limit capacity design, so that the spray volume can reach 35ml/ H.
There is no water tank, so it break inherent container limitations.