Other FeaturesSurvive the cold season with Beurer! The ultra-quiet SI 40 inhalation device by Beurer impresses with its effective application. Liquids such as saline solutions and essential oils can be safely vaporised by the Steam Vaporizer and colds don’t stand a chance. Soothing treatment during the cold season. Includes flexible universal mask for the mouth and nose. Steam setting can be varied for individual treatments. Effective application due to constant temperature. Short inhalation time. Simple one-button operation. Mains operation.