4 in 1 Multifunctional Car Humidifier + Car Aroma Diffuser + Car Purifier + USB (Universal Serial Bus) Charger, 4 in 1 Multifunctional USB (Universal Serial Bus) car air humidifier protect you from dry air, cold, flu, cracked skin in the winter & cold weather, your vehicle need it. 2nd Generation Newest unique design, 360-Degree rotation, dual USB (Universal Serial Bus) port, humidification can be charging simultaneously. No leakage, standard car charger interface, which could compatible with the Most vehicles. Auto-Off After 2 Hours, Safe & Durable With a 50ml humidifying capacity, It's enough to change the car microenvironment & meet your needs. The 2-hour automatic Shut-Off prevents potential harm from running without water. Adjustable Bracket Suitable for cigarette lighter in any different locations of your vehicle. Note: Purified water, unified water & soluble essential oil are recommended. Please do not use greasy aroma oils, & perfume only 2-3 drops with water, much more perfume or greasy oils. It won