Fresh Air and Favorite Scents: By adding few drops of your favourite essential oils, this car humidifier diffuser can refresh & clean the air and make your surroundings smell however you like, you can feel invigorated and less anxiety during long road trips, busy traffic or long working hours. Fits Perfectly In Car Cup Holder: It can be fit firmly in the car cup holder, no water leakage during drive, and its space-saving is pefect on your office or home desk. Easy to operate: Fill your car diffuser up with water and add few drops of oils, then plug into the USB port in your car. Its handy to operate with two buttons on top, one button is the ON/OFF switch and the other is a mist mode function choice: Continuous/Intermittent mode, another button is to choose your favorite color. Good Home Decor and Night Light: Designed with a transparent outer shell, this car oil diffuser makes a wonderful home decor even in the daytime. When used at night, it serves as a night light to provide better illumination. The 7 changing colors create a peaceful atmosphere when you're driving. Safe for Use: The car essential oil diffuser will turn off automatically when water left in the water tank is lower than a certain amount to prevent any dry burning, it is safe for use. Car Diffuser for Essential Oils, Good Partner for you during long road trip, travel and long-hour working, It works as a mini usb aroma diffuser to diffuse your favorite smell by adding essential oils, which will relieve tiredness and reduce anxiety while driving or working. It works as a car humidifier diffuser to remove unpleasant smells, like cigarette smoke, pet odors and more. You will feel the fresh smell like in the forest. It works as a night light and room decor by the light color chasing, which create a peaceful and comfortable atmosphere when you are in the car or room. How to use How to use 1. Open the lid on top 2. Add water, not more than 50ml, please pay attention to the Max line on the usb diffuser 3. Add 1-2 drops essential oils(this product didn't include essential oils) 4. Press the button to top and enjoy it Multifunction: Car Diffuser, Night Light, mini Humidifier, Home Decor Extentive use: during driving, travelling, working, sleeping, reading Perfect Gift: For Birthday, Mother's Day, Father's Day, Christmas