1.[ Large Spray Mini Desk/Car Humidifier ]: This small humidifiers for bedroom with portable and small design is easy to take anywhere. The large volume mini humidifier with the fine spray greatly increases the spray volume per hour, effectively moisturizing the dry air,preventing static electricity and dust, reliving dry nose and throat. It is a great winter companion for you and your plants, you can take it for travel, bedroom, office, car. 2.[ Mist Modes Humidifiers ]: small humidifier can effectively moisturize dry skin and help you reduce skin peeling or relief from sinus issues. 3.[ Auto Shut-Off & Whisper Quiet Operation Top Fill Humidifiers ]: When the water level of the water tank is lower than the water level probe in the water tank, the portable humidifiers for travel will automatically turn off the power, giving you and your family a great sense of security. The usb personal humidifier operate silently below 30dB, this humidifiers wont bother you while sleeping and working. Ideal mini humidifier for baby room or office space. 4.Simple design