I bought this for my mom several years ago to have when we were out and about. She is now on 24/7 oxygen so her insurance bought her a new one for home and travel. It was only used a couple of times. Comes with everything pictured except the Extender Tube with Vaporizer capsule. I paid close to $400.
I bought this off Amazon and this note was on the listing:
Note: this product is a non-medical device.This portable oxygen generator for Emergency Use only for family oxygen use, can't be used as first aid oxygen suction equipment