Creative Mini Humidifier & No Containers Limit- We want to redefine humidification. The humidifier does not have a water tank, but it is compatible with any other humidifiers' water tank, even your mouthwash cups. You can replace different containers according to your needs. Only need a glass of water, a USB plug or a power-bank, the little flower humidifier can work anytime anywhere. Easy to Operate - One humidifier comes with 3 short cotton sticks for replacement. Operation: (1) Take out the filter rod from the package and insert into the middle hole of the humidifier; (2) Keep the side with the filter rod down, and place the small flower humidifier on the water surface; (3) Plug in the power supply, it works.Ultra-Quiet Operation- Our portable small humidifier is easy to take anywhere, provides you with all-day hydration, and also can be used as home decoration. The USB personal humidifier operate silently below 20dB, will not affect your sleep and work at all, effectively moisturizing your skin, allowing you to sleep better and work more energetically. Ideal mini humidifier for bedroom, Children's room, baby room or office desk.Auto Shut-off Protection & Sealing Design- When the water in the container is used up, it will automatically shut down. Completely sealing design, you don't have to worry about water infiltration when it is placed in the water. USB cord is 1.2 meters length, keep a safe distance between power and water.Warm Tips- (1) Please do not use essential oils, which will cause water accumulation at the mist nozzle and seriously affect the spraying effect. (2) Please soak the cotton swab completely for a moment before use for better spray. (3) Powered by USB only, no battery, safe and easy to use.