KCareU Portable Oxygen Concentrator for Home, 2-7 L/min O₂ Flow Adjustable Oxygen Generator Device Machine 93% High O₂ Purity with UK Plug

►To make this work is pretty simple, it comes with all the accessories needed(those are also properly sealed) and I strongly suggest to go over the user manual to fully understand all the functionalities of this product.It took me around 20 min to get it running and to understand exactly what features are the right ones for my mother which needs an extra amount of oxygen because of the age. I usually set it for around 20 min sessions.►I keep on the table to be easier to access the menu and also for the fact that in that place there is open space to allow the device to take enough air. In terms of build in quality the device is as expected, mind though, it is quite heavy.Overall, I am satisfied with the performance of it and seems a seems to be a product that will last quite a long time.Good purchase.