Nomadic Cool Mist 2-Color Wood Grain Ultrasonic Essential Oil Aromatherapy Diffuser By Dewdat Supply Co. (Cedar) Ultrasonic Technology- Whisper-quiet operation diffuses Essential Oil creating a relaxing and pleasant aroma in any environment. 7 Changing LED Mood lights- The light can be turned off completely, set to fade gradually between all colors or fixed to your favorite color. Automatic Shutoff- When the water level becomes too low for proper operation, the diffuser will automatically shut off keeping your unit from being damaged. Some water will remain in the unit, this is normal. Ultra-Portable! This diffuser may be small but it packs a serious punch! The perfect gift for family members & friends! 1 Year Warranty Provided by Dewdat Supply Co. We are committed to providing exceptional customer service. If you happen to receive a defective diffuser from us or you are not completely satisfied with your purchase, simply contact us directly and we'll do our best to make things right!