digitsea Car Aroma Diffuser Purifier Freshener Mini Travel Portable Mist Ultrasonic Humidifier Aromatherapy Essential Oil Freshen & Revitalize Your Driving Experience(pink) 1. Humidification & Aromatherapy & Purify 3in1.With a 25ml Humidifing Capacity per Hour, it's Enough to Change the Car Microenvironment and Meet Your Needs. 2. The 2-hour Automatic Shut-off Prevents Potential Harm from Running without water. 3. Humidifier Water Tank Could be 180-Degree Rotation with No Leakage, Standard Car cigarette lighter socket, Which Could Compatible with the Most Vehicles. 4.Notice:(1)Make sure the cotton sponge is wet,otherwise car diffuser can not work properly. (2) Water soluble essential oil is recommended. (3)DO NOT use greasy aroma oils. 5.Free Shipping with tracking id by USPS, 9~15 days delivery. 90 days warranty(postage not included) ,please purchase with confidence.