GUchina mini Car Air Humidifier & Air Purifier with Car Charger Port,2 in 1,50ml,180 degree rotation (pink) Efficient Atomization Humidifier: Mist-high frequency ultrasonic technology effectively improves air quality, purifies and humidifies the air as well as relieves dry and chapped skin with the ultra-fine mist. Auto-off Function: The shut-off protection function turns off automatically after continuously working for two hours, preventing potential harm from running without water. Silent Ultrasonic Operation: Super quiet operation that you cannot feel it is working. 180 Degree Rotation: The rotatable function with No leakage offers full humidification to increase air moisture and remove the dust in the air. Aroma Diffuser: Put some water soluble essential oil into the water, and then this diffuser will make your car filled with fragrance to relieve your tension and anxiety.