Essential Oil Diffuser, NexGadget 300ml Wood Grain Ultrasonic Oil Diffuser Cool Mist Humidifier with 2 Working Modes for Home, Yoga, Office, Spa, Bedroom,Baby Room NexGadget New Version: An ideal way to add moist, comfortable air to small bedrooms, hotel rooms, baby rooms and even workplace cubicles. Add a drop of your favorite essential oil to give your room a fresh, clean scent. Ultrasonic Opreation: Ultrasonic atomization uses vibrations at 2.4 million times per second, making water and essential oil molecules so tiny that they are easily absorbed by our body. Auto Shut-Off: The Auto Shut-Off function gives you peace of mind when using the diffuser, as when it is detected that there is no more water, the diffuser will automatically power off. New Fan Technology: We've implemented new fan technology to equip the unit with a built-in fan that spreads the mist around a greater area. The fan has been designed to run very quietly, at around 35dB, so it won't disturb your relaxation. This also provides a cooling function and will improve the lifespan of the product. Whisper Quiet: The diffuser adopts ultrasonic technology and runs quietly. It would not be disruptive while you sleep. 2 working modes: continuous mist and intermittent mist working mode.