2-in-1 Compact Air Washing Purifier Feature: Use water to wash and purify the air Humidify the air through the process of cold evaporation Essential oil is optional to bring the therapeutic effects Easy maintenance No filter to change or clean Visible purifying performance Pure water evaporates leaving dirt trapped in the lower housing Quite blower fan with adjustable fan speed Soothing blue LED light indicates the working of the unit Light weight and portable Standard power input included: car adapter Power input types optional: USB or mains adapter Technical specifications: Effective range: about 10m2 Rating voltage: 12V DC Power consumption: 1.8W Dimensions: (H) 135 x (D) 94mm Weight: 164g