The Beurer SI 40 Steam Vaporiser is designed for the treatment of colds and flu, providing relief for the upper airways and nasal passages. It delivers moisture to break down congestion and can be used with saline solutions or essential oils for soothing effects. The device utilizes evaporation technology, making it whisper-quiet and relaxing to use. It offers effective home treatment with a constant steam temperature of around 43°C and adjustable output, with applications taking as little as 10 minutes. The SI 40 comes with a soft, flexible universal mask that comfortably fits over the mouth and nose, and its one-button operation ensures ease of use.