[Professional Cold Air Diffusion Technology]: The waterless essential oil diffuser adopts the Cold-Air Diffusion Technology which takes the high-quality fragrance oil micro-droplets to everywhere in your home or commercial places without any heat or water. And our scent machine is very ECONOMIC, spending less than 0.5ml Per hour of use in the highest grade. Experience the power of scent within minutes, as our high utilization rate guarantees an immersive aromatic experience. [Easy Control, Easy Use]: Our scent machine is very easy to control. Download the app, connect the waterless diffuser via app, set the scent grade. It's more smarter and clear than the regular waterless diffuser that needs you to set the time or grade with the button. Everything is in your control. [Portable & USB, Battery Powered]: The machine makes it perfect for many scenarios including aromatherapy, business accommodations, use within home, yoga, spa, camping, and traveling. It's easy to be taken in your bag. And you can use battery to use the diffuser when you are in any where you want. You can never consider that where I have the outlet to plug. You also can take it when you travel, no need to worry about the usb or adapter either. [Scent Up to Every Corner]: our product makes the scent fill rooms up to 1000 square feet creating a wonderful and relaxing ambiance for your bedrooms, bathrooms, office room, spa room or some commercial space. And there is a fan in the scent machine which could help you make the the scent up to much more further, fill with your room. With our unique fragrance diffuser which refresh you by surrounding the scents. [Natural & Healthy & Safe]: This scent machine brings the scent by cold air technology, which avoid any water dilution to the oil, so you could get the pure essential oils which is natural and completely safe for kids and pets. Use the Waterless Diffuser to exert the BEST effect of the essential oils. It's different from the ultrasonic essential oil diffuser, it needs water with oils, and you need clear the machine every day, or it be harm for . Colour: C Black & White Material:ABS When the following conditions occur, the machine needs to be cleaned: 1. You are going to switch to another essential oil; 2. The atomization volume is weaker and weaker; Cleaning steps: 1. Pull out the atomizer head and twist off the bottle; 2. Use an essential oil bottle to fill an appropriate amount of alcohol and install it on the device for atomization 5-10 times to prevent odor contamination; 3. After drying, end the cleaning. Note: After installation, please keep the machine vertical. Tilting or flipping the machine cause oil leakage and damage the machine. Package Contents: 1 * aromatherapy machine (battery is D battery, not included in delivery) 1 * atomizer head essential oil bottle (excluding essential oil) 1 * wall mount 1 * USB cable 1 set * screws 1 * key Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.