3.5L Large Capacity The air humidifier with 3.5L large water tank that keeps the room humidifier working over 20 hours on a single fill, You dont need to add water to humidifier multiple times Change the water once a day can reduce the growth of impurity and maintain health.2022 NEW Double Cool Mist Spray HumidifierThis cool mist humidifier has two modes: continuous mode and intermittent mode. It can operate up to 20 hours with dual-mist continuous spray mode, and up to 30 hours with one-mist intermittent mode. You can choose the appropriate spraying mode according to your environment and space.Quiet Ultrasonic HumidifierThis baby humidifier operate at low than 32dB almost silent frequency, which will not affect your work and sleep. Soft night light could create a sweet and romantic sleeping atmosphere, improve your sleep qualitySafe and Auto Turn-OffThis small humidifier will automatically turn off the power when it running up to 12 hours. Dont worry about being damaged in the absence of water. The mini humidifier for home, office desks and travel. It is a perfect choice for your life, work or as a giftKind Reminder Please soak the cotton swab for 3-5 minutes until it is fully soaked before using. Please do NOT add essential oils or distilled water into the humidifier, which will cause the cotton swab to clog and unusable. Please do NOT loss the spring when replacing the cotton swab.