J&L Shop Car Aroma Diffuser Humidifier - Portable Mini Car Aromatherapy Humidifier Air Diffuser Purifier Freshener (Blue) 3 in 1 functions: Humidification & Aromatherapy & Purify With a 25ml Humidifing Capacity per Hour, it's Enough to Change the Car Microenvironment and Meet Your Needs. The 2-hour Automatic Shut-off Prevents Potential Harm from Running without water Small Enough to Easily Fit into a Coat Pocket, or Slip into Your Purse or Bag, Which Includes Charger Design, not Need Prepare the External Power Adapter or Cable Humidifier Water Tank Could be 180-Degree Rotation with No Leakage, Standard Car Charger Interface, Which Could Compatible with the Most Vehicles Notice:1. You need to wet the cotton sponge first, if not, car diffuser can not work properly. 2. Water soluble essential oil are preferabe.Please DO NOT use greasy aroma oils