1. Main function is supporting oxygen supply system in center for emergency use.2. It adopts precision cutting to ensure the accuracy and tolerance of each part,equipped with oxygen meter accessories,which is convenient and practical.3. Fine workmanship and quality assurance,not easy to rust or fade,long service life.4. The gas is specially filtered and humidified to basically eliminate impure substances in oxygen,making oxygen more comfortable and safe.5. Oxygen inhaler decompresses the high-pressure gas in a steel cylinder into a low-pressure oxygen through a spring piston for human breathing. With complete accessories and easy to use,user-friendly design,non-toxic and odorless.Product name: Buoy typeoxygen inhalerInput pressure: less than 15MpaOutput pressure: 0.25MpaFlow adjustment range: 1-10L/minSafety valve: 0.5Mpa automatic exhaustImported thread: G5/8-14 (CGA540)Outlet thread: M12x1Colour:transparent + greenMaterial:Zinc alloySize:6.20 x 5.69 x 1.70 cmPackage Contents:1 x Oxygen Machine (Gas Cylinder + Gas Meter)1 x English manual1 x Oxygen TubeOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.