100% brand new and high quality OOTDTY Features: Made of high-quality materials, strong and durable, non-toxic, safe, and long service life. Flowmeter has clear scale, high sensitivity and accurate measurement. Humidification bottle is detachable, easy to clean and more hygienic. Suitable for hospitals, home use, etc. Specifications: Material: Plastic Working pressure: 0.2MPa~0 3MPa Maximum flow: 10L/min Humidification water: distilled water or purified water Size: app.62x250mm/2.44x9.84in Optional Colors: White, Green Quantity: 1set Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Oxygen Inhaler 1 x User Manual(other accessories demo in the picture is not included.)