3 Timer Settings & 7 LED Indicators: You can easily press the mist button to choose a timer setting according to your preference (10sec / 2 hours / 4 hours / ON). You can also press the light button to adjust the 7 LED lights (steady on / color changing). Large Capacity & Waterless Shutdown: Our cool mist humidifier diffuser has a capacity of 500ml and adopts advanced wave diffusion technology to diffuse essential oils for a better life. During the life of the product, the atomizer will turn off automatically when it has no water. Romantic Atmosphere: Bedroom Fragrance Diffuser Vaporizers use ultrasonic technology to make the mist finer. With essential plant oils, it can calm nervousness and the soul. Great night light for little kids who are afraid of the dark night. Wonderful gifts for your lover and friend: Aroma steam diffusers can be used as humidifier, air aroma machine, night light, great gift. To create a quiet and comfortable environment for you to relax and enjoy life. The essential oil diffuser humidifier is the best gift for your sweetheart.