Overview:[Advanced technique creates prefect mist] :This humidifier uses ultrasonic vibrations rather than normal heat to make mist. It atomizes water and oil through ultrasonic vibrations which can make perfect vapor that preserves the integrity and original therapeutic properties of the oils.[A Feeling of Cool and Fire] : A realistic flame effect can be generated by the fire(smart LED lights) and the cool(mist from the diffuser). You can choose either gentle flame or violent flame by a short touch or a long touch of the button. With this Essential oil diffuser at night, like sitting near a fireplace, you will feel really relaxing and healing.[Super Quiet-- a Good Sleeping Atmosphere for You] :With unique noise reduction technology, noise of the diffuser can be controlled below 36dB. The diffuser also creates a vapor sound like white sound to make people feel relaxed and easy to sleep.[Safety First-- Waterless Auto-off] :Just focus on your stuff, no worry about the humidifier. It will stop working once the water runs out which keeps fire away and protects your family.[Great Gifts and Warm Care] :This diffuser is a best gift for your friends and family to keep them away from dry air and relax. Some drops of your favourite essential oil can fill the room with much fragrance for office, gym, spa or home.Product information:Power supply mode: USBFunction: AtomizerShape: SquareNoise: 36dB or lessWater tank capacity: 1 liter or lessWater shortage and power failure protection: SupportOperation mode: MechanicalNumber of fog outlets: 1Rated voltage: 5vRated power: 4.5wColor: Flame Aroma Diffuser-Black, Flame Aroma Diffuser-WhiteProduct specifications: USB plug-in versionLiner material: PPStandard capacity: 180ml MAXShell technology: ABSSize :75*75*137mmPacking list:Humidifier*1Packing box*1, manual*1, power cord*1