The W200 purifies and humidifies the ambient air by moving a moistened fabric stretched over a rotating drum through the air flow. The control knob mounted flush to the body makes it easy to operate. The unit automatically detects a lack of moisture in the air and turns itself off. Additionally, an aroma compartment allows for scented oils to be released. The design of the W200 pays particular attention to ease of cleaning and intuitive operation. The water-bearing parts can be disassembled in a few easy steps and cleaned in a dishwasher. The puristic design and clear lines of the W200 emphasize the simplicity of operation.