Blue Lagoon combines the functions of a humidifier and a heater in one device. Room temperature and room climate can thus be regulated according to the seasons and adjusted easily to meet ­individual needs. The device uses a newly developed PTC thermistor structure to generate heat, while the humidifier function prevents dry heating air in winter and ensures pleasant coolness in the summer months. A special eye-catcher is the slim light band that runs around the sophisticatedly designed device.