Comforday Upgraded 100ml Aromatherapy Essential Oil Diffuser Portable Ultrasonic Diffusers Cool Mist Humidifier with 7 Colors LED Lights and Waterless Auto Shut-off for Home Office Room White Auto Shut Off: When water runs low - adds to safety, energy efficiency, and peace of mind- especially for use at night Ultrasonic Operation: Humidify your living space to prevent dry, stuffy air and flu/cold germs infecting your loved ones. Prevent dry and chapped skin in dry winter months Safe and Easy to Use: Comforday aromatherapy oil diffuser is cool to touch, 100% safe. And it is very easy to use, just fill with water and add a few drops of your favorite essential oil. Fill the space it was with a lovely fragrance that can lift your mood and relieve stress from Stressful and tired day 7 Color Led Light: 7 Color Changing lamps for your choice, Comforday aroma diffuser can be turned off entirely, or can be set to one fixed color. It's not only whisper - quiet but changes colors with integrated LED lights to set the perfect mood while having an auto off feature, making this the perfect portable aroma diffuser companion Safety Guarantee: Our power adapter is certified with CE and ROHS for business and home use. Its foot cable will make sure the adapter is tucked away safely. The diffuser and adapter should be used indoor home use or office use without any worry of short circuit.