Key Features: Features an oil-free pump, reducing the need for daily maintenance and lubrication. Performance: Operates with air pressure and provides an inhalation rate of approximately 0.2 ml/min. Design: Features a compact and portable design, making it suitable for home use and respiratory care. This product is a Yuwell 403T model steam inhaler (nebulizer), designed to convert liquid medications into a fine mist for easy inhalation.