Adjustable length: the length of this cool mist humidifier is adjustable, so you can combine with different sizes containers to use; Compact in size and light in weight, convenient to carry with you anywhere and easy to store Without water bottle: with this USB air humidifier, you don't need to tolerate the dry air anymore; Brief design with no water tank, just simply place the humidifier in any water cup or mineral water bottle, then you can enjoy the humid air and breath more comfortably Using introduction: our mini mist humidifier has 2 spray modes, one-key start, continuous mode, and another press to adjust to intermittent mode; At the same time, there is a timing function, which will automatically close after 8 hours, so you don't need to worry about the humidifier being destroyed in the absence of water, safe to use USB charging: our humidifier does not have power storage function, but your USB interface allows it to be applied anytime and anywhere; You can plug the charging cable into a portable power supply, laptop or socket, please use purified water MaterialPlastic, Cotton